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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
213516ef | 3 | Copyright (C) 1988-2023 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b JM |
5 | This file is part of GDB. |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b JM |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c5aa993b | 19 | |
23860348 | 20 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 21 | |
c906108c | 22 | #include "defs.h" |
c906108c SS |
23 | #include <ctype.h> |
24 | #include <fcntl.h> | |
c906108c | 25 | #include "inferior.h" |
45741a9c | 26 | #include "infrun.h" |
c906108c SS |
27 | #include "bfd.h" |
28 | #include "symfile.h" | |
29 | #include "target.h" | |
3b3dac9b | 30 | #include "process-stratum-target.h" |
c906108c SS |
31 | #include "gdbcmd.h" |
32 | #include "objfiles.h" | |
c906108c | 33 | #include "gdbthread.h" |
c2c6d25f | 34 | #include "remote.h" |
722247f1 | 35 | #include "remote-notif.h" |
4e052eda | 36 | #include "regcache.h" |
fd0407d6 | 37 | #include "value.h" |
76727919 | 38 | #include "observable.h" |
a77053c2 | 39 | #include "solib.h" |
37a105a1 DJ |
40 | #include "cli/cli-decode.h" |
41 | #include "cli/cli-setshow.h" | |
424163ea | 42 | #include "target-descriptions.h" |
a4453b7e | 43 | #include "gdb_bfd.h" |
268a13a5 TT |
44 | #include "gdbsupport/filestuff.h" |
45 | #include "gdbsupport/rsp-low.h" | |
6b940e6a | 46 | #include "disasm.h" |
f00aae0f | 47 | #include "location.h" |
c906108c | 48 | |
268a13a5 | 49 | #include "gdbsupport/gdb_sys_time.h" |
c906108c | 50 | |
400b5eca | 51 | #include "gdbsupport/event-loop.h" |
c2c6d25f | 52 | #include "event-top.h" |
2acceee2 | 53 | #include "inf-loop.h" |
43ff13b4 | 54 | |
c906108c SS |
55 | #include <signal.h> |
56 | #include "serial.h" | |
57 | ||
7e10abd1 | 58 | #include "gdbcore.h" |
6240bebf | 59 | |
449092f6 | 60 | #include "remote-fileio.h" |
198f946f | 61 | #include "gdbsupport/fileio.h" |
53ce3c39 | 62 | #include <sys/stat.h> |
dc146f7c | 63 | #include "xml-support.h" |
449092f6 | 64 | |
fd79ecee DJ |
65 | #include "memory-map.h" |
66 | ||
35b1e5cc SS |
67 | #include "tracepoint.h" |
68 | #include "ax.h" | |
69 | #include "ax-gdb.h" | |
268a13a5 | 70 | #include "gdbsupport/agent.h" |
9accd112 | 71 | #include "btrace.h" |
c0272db5 | 72 | #include "record-btrace.h" |
268a13a5 TT |
73 | #include "gdbsupport/scoped_restore.h" |
74 | #include "gdbsupport/environ.h" | |
75 | #include "gdbsupport/byte-vector.h" | |
4a72de73 | 76 | #include "gdbsupport/search.h" |
39ef2f62 | 77 | #include <algorithm> |
ff52c073 | 78 | #include <iterator> |
9d6eea31 | 79 | #include <unordered_map> |
93b54c8e | 80 | #include "async-event.h" |
754487e2 | 81 | #include "gdbsupport/selftest.h" |
35b1e5cc | 82 | |
f6ac5f3d PA |
83 | /* The remote target. */ |
84 | ||
d9f719f1 PA |
85 | static const char remote_doc[] = N_("\ |
86 | Use a remote computer via a serial line, using a gdb-specific protocol.\n\ | |
87 | Specify the serial device it is connected to\n\ | |
88 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
89 | ||
cda09ec9 SM |
90 | /* See remote.h */ |
91 | ||
02349803 | 92 | bool remote_debug = false; |
cda09ec9 | 93 | |
6b8edb51 PA |
94 | #define OPAQUETHREADBYTES 8 |
95 | ||
96 | /* a 64 bit opaque identifier */ | |
97 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
98 | ||
99 | struct gdb_ext_thread_info; | |
100 | struct threads_listing_context; | |
101 | typedef int (*rmt_thread_action) (threadref *ref, void *context); | |
102 | struct protocol_feature; | |
103 | struct packet_reg; | |
104 | ||
105 | struct stop_reply; | |
32603266 | 106 | typedef std::unique_ptr<stop_reply> stop_reply_up; |
6b8edb51 PA |
107 | |
108 | /* Generic configuration support for packets the stub optionally | |
109 | supports. Allows the user to specify the use of the packet as well | |
110 | as allowing GDB to auto-detect support in the remote stub. */ | |
111 | ||
112 | enum packet_support | |
113 | { | |
114 | PACKET_SUPPORT_UNKNOWN = 0, | |
115 | PACKET_ENABLE, | |
116 | PACKET_DISABLE | |
117 | }; | |
118 | ||
ff52c073 CS |
119 | /* Convert the packet support auto_boolean to a name used for gdb printing. */ |
120 | ||
121 | static const char * | |
122 | get_packet_support_name (auto_boolean support) | |
123 | { | |
124 | switch (support) | |
125 | { | |
126 | case AUTO_BOOLEAN_TRUE: | |
127 | return "on"; | |
128 | case AUTO_BOOLEAN_FALSE: | |
129 | return "off"; | |
130 | case AUTO_BOOLEAN_AUTO: | |
131 | return "auto"; | |
132 | default: | |
133 | gdb_assert_not_reached ("invalid var_auto_boolean"); | |
134 | } | |
135 | } | |
136 | ||
137 | /* Convert the target type (future remote target or currently connected target) | |
138 | to a name used for gdb printing. */ | |
139 | ||
140 | static const char * | |
141 | get_target_type_name (bool target_connected) | |
142 | { | |
143 | if (target_connected) | |
144 | return _("on the current remote target"); | |
145 | else | |
146 | return _("on future remote targets"); | |
147 | } | |
148 | ||
6b8edb51 PA |
149 | /* Analyze a packet's return value and update the packet config |
150 | accordingly. */ | |
151 | ||
152 | enum packet_result | |
153 | { | |
154 | PACKET_ERROR, | |
155 | PACKET_OK, | |
156 | PACKET_UNKNOWN | |
157 | }; | |
158 | ||
ff52c073 CS |
159 | /* Enumeration of packets for a remote target. */ |
160 | ||
161 | enum { | |
162 | PACKET_vCont = 0, | |
163 | PACKET_X, | |
164 | PACKET_qSymbol, | |
165 | PACKET_P, | |
166 | PACKET_p, | |
167 | PACKET_Z0, | |
168 | PACKET_Z1, | |
169 | PACKET_Z2, | |
170 | PACKET_Z3, | |
171 | PACKET_Z4, | |
172 | PACKET_vFile_setfs, | |
173 | PACKET_vFile_open, | |
174 | PACKET_vFile_pread, | |
175 | PACKET_vFile_pwrite, | |
176 | PACKET_vFile_close, | |
177 | PACKET_vFile_unlink, | |
178 | PACKET_vFile_readlink, | |
179 | PACKET_vFile_fstat, | |
180 | PACKET_qXfer_auxv, | |
181 | PACKET_qXfer_features, | |
182 | PACKET_qXfer_exec_file, | |
183 | PACKET_qXfer_libraries, | |
184 | PACKET_qXfer_libraries_svr4, | |
185 | PACKET_qXfer_memory_map, | |
186 | PACKET_qXfer_osdata, | |
187 | PACKET_qXfer_threads, | |
188 | PACKET_qXfer_statictrace_read, | |
189 | PACKET_qXfer_traceframe_info, | |
190 | PACKET_qXfer_uib, | |
191 | PACKET_qGetTIBAddr, | |
192 | PACKET_qGetTLSAddr, | |
193 | PACKET_qSupported, | |
194 | PACKET_qTStatus, | |
195 | PACKET_QPassSignals, | |
196 | PACKET_QCatchSyscalls, | |
197 | PACKET_QProgramSignals, | |
198 | PACKET_QSetWorkingDir, | |
199 | PACKET_QStartupWithShell, | |
200 | PACKET_QEnvironmentHexEncoded, | |
201 | PACKET_QEnvironmentReset, | |
202 | PACKET_QEnvironmentUnset, | |
203 | PACKET_qCRC, | |
204 | PACKET_qSearch_memory, | |
205 | PACKET_vAttach, | |
206 | PACKET_vRun, | |
207 | PACKET_QStartNoAckMode, | |
208 | PACKET_vKill, | |
209 | PACKET_qXfer_siginfo_read, | |
210 | PACKET_qXfer_siginfo_write, | |
211 | PACKET_qAttached, | |
212 | ||
213 | /* Support for conditional tracepoints. */ | |
214 | PACKET_ConditionalTracepoints, | |
215 | ||
216 | /* Support for target-side breakpoint conditions. */ | |
217 | PACKET_ConditionalBreakpoints, | |
218 | ||
219 | /* Support for target-side breakpoint commands. */ | |
220 | PACKET_BreakpointCommands, | |
221 | ||
222 | /* Support for fast tracepoints. */ | |
223 | PACKET_FastTracepoints, | |
224 | ||
225 | /* Support for static tracepoints. */ | |
226 | PACKET_StaticTracepoints, | |
227 | ||
228 | /* Support for installing tracepoints while a trace experiment is | |
229 | running. */ | |
230 | PACKET_InstallInTrace, | |
231 | ||
232 | PACKET_bc, | |
233 | PACKET_bs, | |
234 | PACKET_TracepointSource, | |
235 | PACKET_QAllow, | |
236 | PACKET_qXfer_fdpic, | |
237 | PACKET_QDisableRandomization, | |
238 | PACKET_QAgent, | |
239 | PACKET_QTBuffer_size, | |
240 | PACKET_Qbtrace_off, | |
241 | PACKET_Qbtrace_bts, | |
242 | PACKET_Qbtrace_pt, | |
243 | PACKET_qXfer_btrace, | |
244 | ||
245 | /* Support for the QNonStop packet. */ | |
246 | PACKET_QNonStop, | |
247 | ||
248 | /* Support for the QThreadEvents packet. */ | |
249 | PACKET_QThreadEvents, | |
250 | ||
251 | /* Support for multi-process extensions. */ | |
252 | PACKET_multiprocess_feature, | |
253 | ||
254 | /* Support for enabling and disabling tracepoints while a trace | |
255 | experiment is running. */ | |
256 | PACKET_EnableDisableTracepoints_feature, | |
257 | ||
258 | /* Support for collecting strings using the tracenz bytecode. */ | |
259 | PACKET_tracenz_feature, | |
260 | ||
261 | /* Support for continuing to run a trace experiment while GDB is | |
262 | disconnected. */ | |
263 | PACKET_DisconnectedTracing_feature, | |
264 | ||
265 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
266 | PACKET_augmented_libraries_svr4_read_feature, | |
267 | ||
268 | /* Support for the qXfer:btrace-conf:read packet. */ | |
269 | PACKET_qXfer_btrace_conf, | |
270 | ||
271 | /* Support for the Qbtrace-conf:bts:size packet. */ | |
272 | PACKET_Qbtrace_conf_bts_size, | |
273 | ||
274 | /* Support for swbreak+ feature. */ | |
275 | PACKET_swbreak_feature, | |
276 | ||
277 | /* Support for hwbreak+ feature. */ | |
278 | PACKET_hwbreak_feature, | |
279 | ||
280 | /* Support for fork events. */ | |
281 | PACKET_fork_event_feature, | |
282 | ||
283 | /* Support for vfork events. */ | |
284 | PACKET_vfork_event_feature, | |
285 | ||
286 | /* Support for the Qbtrace-conf:pt:size packet. */ | |
287 | PACKET_Qbtrace_conf_pt_size, | |
288 | ||
289 | /* Support for exec events. */ | |
290 | PACKET_exec_event_feature, | |
291 | ||
292 | /* Support for query supported vCont actions. */ | |
293 | PACKET_vContSupported, | |
294 | ||
295 | /* Support remote CTRL-C. */ | |
296 | PACKET_vCtrlC, | |
297 | ||
298 | /* Support TARGET_WAITKIND_NO_RESUMED. */ | |
299 | PACKET_no_resumed, | |
300 | ||
301 | /* Support for memory tagging, allocation tag fetch/store | |
302 | packets and the tag violation stop replies. */ | |
303 | PACKET_memory_tagging_feature, | |
304 | ||
305 | PACKET_MAX | |
306 | }; | |
307 | ||
6b8edb51 | 308 | struct threads_listing_context; |
3c69da40 PA |
309 | |
310 | /* Stub vCont actions support. | |
311 | ||
312 | Each field is a boolean flag indicating whether the stub reports | |
313 | support for the corresponding action. */ | |
314 | ||
315 | struct vCont_action_support | |
316 | { | |
317 | /* vCont;t */ | |
318 | bool t = false; | |
319 | ||
320 | /* vCont;r */ | |
321 | bool r = false; | |
322 | ||
323 | /* vCont;s */ | |
324 | bool s = false; | |
325 | ||
326 | /* vCont;S */ | |
327 | bool S = false; | |
328 | }; | |
329 | ||
405feb71 | 330 | /* About this many threadids fit in a packet. */ |
3c69da40 PA |
331 | |
332 | #define MAXTHREADLISTRESULTS 32 | |
333 | ||
334 | /* Data for the vFile:pread readahead cache. */ | |
335 | ||
336 | struct readahead_cache | |
337 | { | |
338 | /* Invalidate the readahead cache. */ | |
339 | void invalidate (); | |
340 | ||
341 | /* Invalidate the readahead cache if it is holding data for FD. */ | |
342 | void invalidate_fd (int fd); | |
343 | ||
344 | /* Serve pread from the readahead cache. Returns number of bytes | |
345 | read, or 0 if the request can't be served from the cache. */ | |
346 | int pread (int fd, gdb_byte *read_buf, size_t len, ULONGEST offset); | |
347 | ||
348 | /* The file descriptor for the file that is being cached. -1 if the | |
349 | cache is invalid. */ | |
350 | int fd = -1; | |
351 | ||
352 | /* The offset into the file that the cache buffer corresponds | |
353 | to. */ | |
354 | ULONGEST offset = 0; | |
355 | ||
356 | /* The buffer holding the cache contents. */ | |
6b19f38a | 357 | gdb::byte_vector buf; |
3c69da40 PA |
358 | |
359 | /* Cache hit and miss counters. */ | |
360 | ULONGEST hit_count = 0; | |
361 | ULONGEST miss_count = 0; | |
362 | }; | |
363 | ||
364 | /* Description of the remote protocol for a given architecture. */ | |
365 | ||
366 | struct packet_reg | |
367 | { | |
368 | long offset; /* Offset into G packet. */ | |
369 | long regnum; /* GDB's internal register number. */ | |
370 | LONGEST pnum; /* Remote protocol register number. */ | |
371 | int in_g_packet; /* Always part of G packet. */ | |
372 | /* long size in bytes; == register_size (target_gdbarch (), regnum); | |
373 | at present. */ | |
374 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); | |
375 | at present. */ | |
376 | }; | |
377 | ||
378 | struct remote_arch_state | |
379 | { | |
380 | explicit remote_arch_state (struct gdbarch *gdbarch); | |
381 | ||
382 | /* Description of the remote protocol registers. */ | |
383 | long sizeof_g_packet; | |
384 | ||
385 | /* Description of the remote protocol registers indexed by REGNUM | |
386 | (making an array gdbarch_num_regs in size). */ | |
387 | std::unique_ptr<packet_reg[]> regs; | |
388 | ||
389 | /* This is the size (in chars) of the first response to the ``g'' | |
390 | packet. It is used as a heuristic when determining the maximum | |
391 | size of memory-read and memory-write packets. A target will | |
392 | typically only reserve a buffer large enough to hold the ``g'' | |
393 | packet. The size does not include packet overhead (headers and | |
394 | trailers). */ | |
395 | long actual_register_packet_size; | |
396 | ||
397 | /* This is the maximum size (in chars) of a non read/write packet. | |
398 | It is also used as a cap on the size of read/write packets. */ | |
399 | long remote_packet_size; | |
400 | }; | |
401 | ||
402 | /* Description of the remote protocol state for the currently | |
403 | connected target. This is per-target state, and independent of the | |
404 | selected architecture. */ | |
405 | ||
406 | class remote_state | |
407 | { | |
408 | public: | |
409 | ||
410 | remote_state (); | |
411 | ~remote_state (); | |
412 | ||
413 | /* Get the remote arch state for GDBARCH. */ | |
414 | struct remote_arch_state *get_remote_arch_state (struct gdbarch *gdbarch); | |
415 | ||
416 | public: /* data */ | |
417 | ||
418 | /* A buffer to use for incoming packets, and its current size. The | |
419 | buffer is grown dynamically for larger incoming packets. | |
420 | Outgoing packets may also be constructed in this buffer. | |
8d64371b | 421 | The size of the buffer is always at least REMOTE_PACKET_SIZE; |
3c69da40 PA |
422 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing |
423 | packets. */ | |
8d64371b | 424 | gdb::char_vector buf; |
3c69da40 PA |
425 | |
426 | /* True if we're going through initial connection setup (finding out | |
427 | about the remote side's threads, relocating symbols, etc.). */ | |
428 | bool starting_up = false; | |
429 | ||
430 | /* If we negotiated packet size explicitly (and thus can bypass | |
431 | heuristics for the largest packet size that will not overflow | |
432 | a buffer in the stub), this will be set to that packet size. | |
433 | Otherwise zero, meaning to use the guessed size. */ | |
434 | long explicit_packet_size = 0; | |
435 | ||
3c69da40 PA |
436 | /* True, if in no ack mode. That is, neither GDB nor the stub will |
437 | expect acks from each other. The connection is assumed to be | |
438 | reliable. */ | |
439 | bool noack_mode = false; | |
440 | ||
441 | /* True if we're connected in extended remote mode. */ | |
442 | bool extended = false; | |
443 | ||
444 | /* True if we resumed the target and we're waiting for the target to | |
445 | stop. In the mean time, we can't start another command/query. | |
446 | The remote server wouldn't be ready to process it, so we'd | |
447 | timeout waiting for a reply that would never come and eventually | |
448 | we'd close the connection. This can happen in asynchronous mode | |
449 | because we allow GDB commands while the target is running. */ | |
450 | bool waiting_for_stop_reply = false; | |
451 | ||
452 | /* The status of the stub support for the various vCont actions. */ | |
453 | vCont_action_support supports_vCont; | |
454 | ||
455 | /* True if the user has pressed Ctrl-C, but the target hasn't | |
456 | responded to that. */ | |
457 | bool ctrlc_pending_p = false; | |
458 | ||
459 | /* True if we saw a Ctrl-C while reading or writing from/to the | |
460 | remote descriptor. At that point it is not safe to send a remote | |
461 | interrupt packet, so we instead remember we saw the Ctrl-C and | |
462 | process it once we're done with sending/receiving the current | |
463 | packet, which should be shortly. If however that takes too long, | |
464 | and the user presses Ctrl-C again, we offer to disconnect. */ | |
465 | bool got_ctrlc_during_io = false; | |
466 | ||
467 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that | |
468 | remote_open knows that we don't have a file open when the program | |
469 | starts. */ | |
470 | struct serial *remote_desc = nullptr; | |
471 | ||
472 | /* These are the threads which we last sent to the remote system. The | |
473 | TID member will be -1 for all or -2 for not sent yet. */ | |
474 | ptid_t general_thread = null_ptid; | |
475 | ptid_t continue_thread = null_ptid; | |
476 | ||
477 | /* This is the traceframe which we last selected on the remote system. | |
478 | It will be -1 if no traceframe is selected. */ | |
479 | int remote_traceframe_number = -1; | |
480 | ||
481 | char *last_pass_packet = nullptr; | |
482 | ||
483 | /* The last QProgramSignals packet sent to the target. We bypass | |
484 | sending a new program signals list down to the target if the new | |
485 | packet is exactly the same as the last we sent. IOW, we only let | |
486 | the target know about program signals list changes. */ | |
487 | char *last_program_signals_packet = nullptr; | |
488 | ||
489 | gdb_signal last_sent_signal = GDB_SIGNAL_0; | |
490 | ||
491 | bool last_sent_step = false; | |
492 | ||
493 | /* The execution direction of the last resume we got. */ | |
494 | exec_direction_kind last_resume_exec_dir = EXEC_FORWARD; | |
495 | ||
496 | char *finished_object = nullptr; | |
497 | char *finished_annex = nullptr; | |
498 | ULONGEST finished_offset = 0; | |
499 | ||
500 | /* Should we try the 'ThreadInfo' query packet? | |
501 | ||
502 | This variable (NOT available to the user: auto-detect only!) | |
503 | determines whether GDB will use the new, simpler "ThreadInfo" | |
504 | query or the older, more complex syntax for thread queries. | |
505 | This is an auto-detect variable (set to true at each connect, | |
506 | and set to false when the target fails to recognize it). */ | |
507 | bool use_threadinfo_query = false; | |
508 | bool use_threadextra_query = false; | |
509 | ||
510 | threadref echo_nextthread {}; | |
511 | threadref nextthread {}; | |
512 | threadref resultthreadlist[MAXTHREADLISTRESULTS] {}; | |
513 | ||
514 | /* The state of remote notification. */ | |
515 | struct remote_notif_state *notif_state = nullptr; | |
516 | ||
517 | /* The branch trace configuration. */ | |
518 | struct btrace_config btrace_config {}; | |
519 | ||
520 | /* The argument to the last "vFile:setfs:" packet we sent, used | |
521 | to avoid sending repeated unnecessary "vFile:setfs:" packets. | |
522 | Initialized to -1 to indicate that no "vFile:setfs:" packet | |
523 | has yet been sent. */ | |
524 | int fs_pid = -1; | |
525 | ||
526 | /* A readahead cache for vFile:pread. Often, reading a binary | |
527 | involves a sequence of small reads. E.g., when parsing an ELF | |
528 | file. A readahead cache helps mostly the case of remote | |
529 | debugging on a connection with higher latency, due to the | |
530 | request/reply nature of the RSP. We only cache data for a single | |
531 | file descriptor at a time. */ | |
532 | struct readahead_cache readahead_cache; | |
533 | ||
534 | /* The list of already fetched and acknowledged stop events. This | |
535 | queue is used for notification Stop, and other notifications | |
536 | don't need queue for their events, because the notification | |
537 | events of Stop can't be consumed immediately, so that events | |
538 | should be queued first, and be consumed by remote_wait_{ns,as} | |
539 | one per time. Other notifications can consume their events | |
540 | immediately, so queue is not needed for them. */ | |
953edf2b | 541 | std::vector<stop_reply_up> stop_reply_queue; |
3c69da40 PA |
542 | |
543 | /* Asynchronous signal handle registered as event loop source for | |
544 | when we have pending events ready to be passed to the core. */ | |
545 | struct async_event_handler *remote_async_inferior_event_token = nullptr; | |
546 | ||
547 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with | |
548 | ``forever'' still use the normal timeout mechanism. This is | |
549 | currently used by the ASYNC code to guarentee that target reads | |
550 | during the initial connect always time-out. Once getpkt has been | |
551 | modified to return a timeout indication and, in turn | |
552 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
553 | this can go away. */ | |
554 | int wait_forever_enabled_p = 1; | |
555 | ||
556 | private: | |
557 | /* Mapping of remote protocol data for each gdbarch. Usually there | |
558 | is only one entry here, though we may see more with stubs that | |
559 | support multi-process. */ | |
560 | std::unordered_map<struct gdbarch *, remote_arch_state> | |
561 | m_arch_states; | |
562 | }; | |
6b8edb51 | 563 | |
d9f719f1 PA |
564 | static const target_info remote_target_info = { |
565 | "remote", | |
ae9adb36 | 566 | N_("Remote target using gdb-specific protocol"), |
d9f719f1 PA |
567 | remote_doc |
568 | }; | |
569 | ||
ff52c073 CS |
570 | /* Description of a remote packet. */ |
571 | ||
572 | struct packet_description | |
573 | { | |
574 | /* Name of the packet used for gdb output. */ | |
575 | const char *name; | |
576 | ||
577 | /* Title of the packet, used by the set/show remote name-packet | |
578 | commands to identify the individual packages and gdb output. */ | |
579 | const char *title; | |
580 | }; | |
581 | ||
582 | /* Configuration of a remote packet. */ | |
583 | ||
584 | struct packet_config | |
585 | { | |
586 | /* If auto, GDB auto-detects support for this packet or feature, | |
587 | either through qSupported, or by trying the packet and looking | |
588 | at the response. If true, GDB assumes the target supports this | |
589 | packet. If false, the packet is disabled. Configs that don't | |
590 | have an associated command always have this set to auto. */ | |
591 | enum auto_boolean detect; | |
592 | ||
593 | /* Does the target support this packet? */ | |
594 | enum packet_support support; | |
595 | }; | |
596 | ||
fe4c3ca0 CS |
597 | /* User configurable variables for the number of characters in a |
598 | memory read/write packet. MIN (rsa->remote_packet_size, | |
599 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
600 | values (fifo overruns, et.al.) and some users need larger values | |
601 | (speed up transfers). The variables ``preferred_*'' (the user | |
602 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
603 | (Positive - a soft limit, negative - a hard limit). */ | |
604 | ||
605 | struct memory_packet_config | |
606 | { | |
607 | const char *name; | |
608 | long size; | |
609 | int fixed_p; | |
610 | }; | |
611 | ||
612 | /* These global variables contain the default configuration for every new | |
613 | remote_feature object. */ | |
614 | static memory_packet_config memory_read_packet_config = | |
615 | { | |
616 | "memory-read-packet-size", | |
617 | }; | |
618 | static memory_packet_config memory_write_packet_config = | |
619 | { | |
620 | "memory-write-packet-size", | |
621 | }; | |
622 | ||
ff52c073 CS |
623 | /* This global array contains packet descriptions (name and title). */ |
624 | static packet_description packets_descriptions[PACKET_MAX]; | |
625 | /* This global array contains the default configuration for every new | |
626 | per-remote target array. */ | |
627 | static packet_config remote_protocol_packets[PACKET_MAX]; | |
628 | ||
629 | /* Description of a remote target's features. It stores the configuration | |
630 | and provides functions to determine supported features of the target. */ | |
631 | ||
632 | struct remote_features | |
633 | { | |
634 | remote_features () | |
635 | { | |
fe4c3ca0 CS |
636 | m_memory_read_packet_config = memory_read_packet_config; |
637 | m_memory_write_packet_config = memory_write_packet_config; | |
638 | ||
ff52c073 CS |
639 | std::copy (std::begin (remote_protocol_packets), |
640 | std::end (remote_protocol_packets), | |
641 | std::begin (m_protocol_packets)); | |
642 | } | |
643 | ~remote_features () = default; | |
644 | ||
645 | DISABLE_COPY_AND_ASSIGN (remote_features); | |
646 | ||
647 | /* Returns whether a given packet defined by its enum value is supported. */ | |
648 | enum packet_support packet_support (int) const; | |
649 | ||
650 | /* Returns the packet's corresponding "set remote foo-packet" command | |
651 | state. See struct packet_config for more details. */ | |
652 | enum auto_boolean packet_set_cmd_state (int packet) const | |
653 | { return m_protocol_packets[packet].detect; } | |
654 | ||
655 | /* Returns true if the multi-process extensions are in effect. */ | |
656 | int remote_multi_process_p () const | |
657 | { return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; } | |
658 | ||
659 | /* Returns true if fork events are supported. */ | |
660 | int remote_fork_event_p () const | |
661 | { return packet_support (PACKET_fork_event_feature) == PACKET_ENABLE; } | |
662 | ||
663 | /* Returns true if vfork events are supported. */ | |
664 | int remote_vfork_event_p () const | |
665 | { return packet_support (PACKET_vfork_event_feature) == PACKET_ENABLE; } | |
666 | ||
667 | /* Returns true if exec events are supported. */ | |
668 | int remote_exec_event_p () const | |
669 | { return packet_support (PACKET_exec_event_feature) == PACKET_ENABLE; } | |
670 | ||
671 | /* Returns true if memory tagging is supported, false otherwise. */ | |
672 | bool remote_memory_tagging_p () const | |
673 | { return packet_support (PACKET_memory_tagging_feature) == PACKET_ENABLE; } | |
674 | ||
675 | /* Reset all packets back to "unknown support". Called when opening a | |
676 | new connection to a remote target. */ | |
677 | void reset_all_packet_configs_support (); | |
678 | ||
679 | /* Check result value in BUF for packet WHICH_PACKET and update the packet's | |
680 | support configuration accordingly. */ | |
681 | packet_result packet_ok (const char *buf, const int which_packet); | |
682 | packet_result packet_ok (const gdb::char_vector &buf, const int which_packet); | |
683 | ||
fe4c3ca0 CS |
684 | /* Configuration of a remote target's memory read packet. */ |
685 | memory_packet_config m_memory_read_packet_config; | |
686 | /* Configuration of a remote target's memory write packet. */ | |
687 | memory_packet_config m_memory_write_packet_config; | |
688 | ||
ff52c073 CS |
689 | /* The per-remote target array which stores a remote's packet |
690 | configurations. */ | |
691 | packet_config m_protocol_packets[PACKET_MAX]; | |
692 | }; | |
693 | ||
3b3dac9b | 694 | class remote_target : public process_stratum_target |
f6ac5f3d PA |
695 | { |
696 | public: | |
3b3dac9b | 697 | remote_target () = default; |
6b8edb51 | 698 | ~remote_target () override; |
f6ac5f3d | 699 | |
d9f719f1 PA |
700 | const target_info &info () const override |
701 | { return remote_target_info; } | |
f6ac5f3d | 702 | |
121b3efd PA |
703 | const char *connection_string () override; |
704 | ||
f6ac5f3d PA |
705 | thread_control_capabilities get_thread_control_capabilities () override |
706 | { return tc_schedlock; } | |
707 | ||
d9f719f1 PA |
708 | /* Open a remote connection. */ |
709 | static void open (const char *, int); | |
710 | ||
f6ac5f3d PA |
711 | void close () override; |
712 | ||
713 | void detach (inferior *, int) override; | |
714 | void disconnect (const char *, int) override; | |
715 | ||
1192f124 | 716 | void commit_resumed () override; |
f6ac5f3d | 717 | void resume (ptid_t, int, enum gdb_signal) override; |
b60cea74 | 718 | ptid_t wait (ptid_t, struct target_waitstatus *, target_wait_flags) override; |
b4b1a226 | 719 | bool has_pending_events () override; |
f6ac5f3d PA |
720 | |
721 | void fetch_registers (struct regcache *, int) override; | |
722 | void store_registers (struct regcache *, int) override; | |
723 | void prepare_to_store (struct regcache *) override; | |
724 | ||
f6ac5f3d PA |
725 | int insert_breakpoint (struct gdbarch *, struct bp_target_info *) override; |
726 | ||
727 | int remove_breakpoint (struct gdbarch *, struct bp_target_info *, | |
728 | enum remove_bp_reason) override; | |
729 | ||
730 | ||
57810aa7 PA |
731 | bool stopped_by_sw_breakpoint () override; |
732 | bool supports_stopped_by_sw_breakpoint () override; | |
f6ac5f3d | 733 | |
57810aa7 | 734 | bool stopped_by_hw_breakpoint () override; |
f6ac5f3d | 735 | |
57810aa7 | 736 | bool supports_stopped_by_hw_breakpoint () override; |
f6ac5f3d | 737 | |
57810aa7 | 738 | bool stopped_by_watchpoint () override; |
f6ac5f3d | 739 | |
57810aa7 | 740 | bool stopped_data_address (CORE_ADDR *) override; |
f6ac5f3d | 741 | |
57810aa7 | 742 | bool watchpoint_addr_within_range (CORE_ADDR, CORE_ADDR, int) override; |
f6ac5f3d PA |
743 | |
744 | int can_use_hw_breakpoint (enum bptype, int, int) override; | |
745 | ||
746 | int insert_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
747 | ||
748 | int remove_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
749 | ||
750 | int region_ok_for_hw_watchpoint (CORE_ADDR, int) override; | |
751 | ||
752 | int insert_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, | |
753 | struct expression *) override; | |
754 | ||
755 | int remove_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, | |
756 | struct expression *) override; | |
757 | ||
758 | void kill () override; | |
759 | ||
760 | void load (const char *, int) override; | |
761 | ||
762 | void mourn_inferior () override; | |
763 | ||
adc6a863 | 764 | void pass_signals (gdb::array_view<const unsigned char>) override; |
f6ac5f3d PA |
765 | |
766 | int set_syscall_catchpoint (int, bool, int, | |
767 | gdb::array_view<const int>) override; | |
768 | ||
adc6a863 | 769 | void program_signals (gdb::array_view<const unsigned char>) override; |
f6ac5f3d | 770 | |
57810aa7 | 771 | bool thread_alive (ptid_t ptid) override; |
f6ac5f3d PA |
772 | |
773 | const char *thread_name (struct thread_info *) override; | |
774 | ||
775 | void update_thread_list () override; | |
776 | ||
a068643d | 777 | std::string pid_to_str (ptid_t) override; |
f6ac5f3d PA |
778 | |
779 | const char *extra_thread_info (struct thread_info *) override; | |
780 | ||
c80e29db | 781 | ptid_t get_ada_task_ptid (long lwp, ULONGEST thread) override; |
f6ac5f3d PA |
782 | |
783 | thread_info *thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
784 | int handle_len, | |
785 | inferior *inf) override; | |
786 | ||
3d6c6204 KB |
787 | gdb::byte_vector thread_info_to_thread_handle (struct thread_info *tp) |
788 | override; | |
789 | ||
f6ac5f3d PA |
790 | void stop (ptid_t) override; |
791 | ||
792 | void interrupt () override; | |
793 | ||
794 | void pass_ctrlc () override; | |
795 | ||
796 | enum target_xfer_status xfer_partial (enum target_object object, | |
797 | const char *annex, | |
798 | gdb_byte *readbuf, | |
799 | const gdb_byte *writebuf, | |
800 | ULONGEST offset, ULONGEST len, | |
801 | ULONGEST *xfered_len) override; | |
802 | ||
803 | ULONGEST get_memory_xfer_limit () override; | |
804 | ||
805 | void rcmd (const char *command, struct ui_file *output) override; | |
806 | ||
0e90c441 | 807 | const char *pid_to_exec_file (int pid) override; |
f6ac5f3d PA |
808 | |
809 | void log_command (const char *cmd) override | |
810 | { | |
811 | serial_log_command (this, cmd); | |
812 | } | |
813 | ||
814 | CORE_ADDR get_thread_local_address (ptid_t ptid, | |
815 | CORE_ADDR load_module_addr, | |
816 | CORE_ADDR offset) override; | |
817 | ||
57810aa7 | 818 | bool can_execute_reverse () override; |
f6ac5f3d PA |
819 | |
820 | std::vector<mem_region> memory_map () override; | |
821 | ||
822 | void flash_erase (ULONGEST address, LONGEST length) override; | |
823 | ||
824 | void flash_done () override; | |
825 | ||
826 | const struct target_desc *read_description () override; | |
827 | ||
828 | int search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
829 | const gdb_byte *pattern, ULONGEST pattern_len, | |
830 | CORE_ADDR *found_addrp) override; | |
831 | ||
57810aa7 | 832 | bool can_async_p () override; |
f6ac5f3d | 833 | |
57810aa7 | 834 | bool is_async_p () override; |
f6ac5f3d | 835 | |
4a570176 | 836 | void async (bool) override; |
f6ac5f3d | 837 | |
5b6d1e4f PA |
838 | int async_wait_fd () override; |
839 | ||
f6ac5f3d PA |
840 | void thread_events (int) override; |
841 | ||
842 | int can_do_single_step () override; | |
843 | ||
844 | void terminal_inferior () override; | |
845 | ||
846 | void terminal_ours () override; | |
847 | ||
57810aa7 | 848 | bool supports_non_stop () override; |
f6ac5f3d | 849 | |
57810aa7 | 850 | bool supports_multi_process () override; |
f6ac5f3d | 851 | |
57810aa7 | 852 | bool supports_disable_randomization () override; |
f6ac5f3d | 853 | |
57810aa7 | 854 | bool filesystem_is_local () override; |
f6ac5f3d PA |
855 | |
856 | ||
857 | int fileio_open (struct inferior *inf, const char *filename, | |
858 | int flags, int mode, int warn_if_slow, | |
b872057a | 859 | fileio_error *target_errno) override; |
f6ac5f3d PA |
860 | |
861 | int fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
b872057a | 862 | ULONGEST offset, fileio_error *target_errno) override; |
f6ac5f3d PA |
863 | |
864 | int fileio_pread (int fd, gdb_byte *read_buf, int len, | |
b872057a | 865 | ULONGEST offset, fileio_error *target_errno) override; |
f6ac5f3d | 866 | |
b872057a | 867 | int fileio_fstat (int fd, struct stat *sb, fileio_error *target_errno) override; |
f6ac5f3d | 868 | |
b872057a | 869 | int fileio_close (int fd, fileio_error *target_errno) override; |
f6ac5f3d PA |
870 | |
871 | int fileio_unlink (struct inferior *inf, | |
872 | const char *filename, | |
b872057a | 873 | fileio_error *target_errno) override; |
f6ac5f3d PA |
874 | |
875 | gdb::optional<std::string> | |
876 | fileio_readlink (struct inferior *inf, | |
877 | const char *filename, | |
b872057a | 878 | fileio_error *target_errno) override; |
f6ac5f3d | 879 | |
57810aa7 | 880 | bool supports_enable_disable_tracepoint () override; |
f6ac5f3d | 881 | |
57810aa7 | 882 | bool supports_string_tracing () override; |
f6ac5f3d | 883 | |
ff52c073 CS |
884 | int remote_supports_cond_tracepoints (); |
885 | ||
57810aa7 | 886 | bool supports_evaluation_of_breakpoint_conditions () override; |
f6ac5f3d | 887 | |
ff52c073 CS |
888 | int remote_supports_fast_tracepoints (); |
889 | ||
890 | int remote_supports_static_tracepoints (); | |
891 | ||
892 | int remote_supports_install_in_trace (); | |
893 | ||
57810aa7 | 894 | bool can_run_breakpoint_commands () override; |
f6ac5f3d PA |
895 | |
896 | void trace_init () override; | |
897 | ||
898 | void download_tracepoint (struct bp_location *location) override; | |
899 | ||
57810aa7 | 900 | bool can_download_tracepoint () override; |
f6ac5f3d PA |
901 | |
902 | void download_trace_state_variable (const trace_state_variable &tsv) override; | |
903 | ||
904 | void enable_tracepoint (struct bp_location *location) override; | |
905 | ||
906 | void disable_tracepoint (struct bp_location *location) override; | |
907 | ||
908 | void trace_set_readonly_regions () override; | |
909 | ||
910 | void trace_start () override; | |
911 | ||
912 | int get_trace_status (struct trace_status *ts) override; | |
913 | ||
914 | void get_tracepoint_status (struct breakpoint *tp, struct uploaded_tp *utp) | |
915 | override; | |
916 | ||
917 | void trace_stop () override; | |
918 | ||
919 | int trace_find (enum trace_find_type type, int num, | |
920 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) override; | |
921 | ||
57810aa7 | 922 | bool get_trace_state_variable_value (int tsv, LONGEST *val) override; |
f6ac5f3d PA |
923 | |
924 | int save_trace_data (const char *filename) override; | |
925 | ||
926 | int upload_tracepoints (struct uploaded_tp **utpp) override; | |
927 | ||
928 | int upload_trace_state_variables (struct uploaded_tsv **utsvp) override; | |
929 | ||
930 | LONGEST get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) override; | |
931 | ||
932 | int get_min_fast_tracepoint_insn_len () override; | |
933 | ||
934 | void set_disconnected_tracing (int val) override; | |
935 | ||
936 | void set_circular_trace_buffer (int val) override; | |
937 | ||
938 | void set_trace_buffer_size (LONGEST val) override; | |
939 | ||
57810aa7 PA |
940 | bool set_trace_notes (const char *user, const char *notes, |
941 | const char *stopnotes) override; | |
f6ac5f3d PA |
942 | |
943 | int core_of_thread (ptid_t ptid) override; | |
944 | ||
945 | int verify_memory (const gdb_byte *data, | |
946 | CORE_ADDR memaddr, ULONGEST size) override; | |
947 | ||
948 | ||
57810aa7 | 949 | bool get_tib_address (ptid_t ptid, CORE_ADDR *addr) override; |
f6ac5f3d PA |
950 | |
951 | void set_permissions () override; | |
952 | ||
953 | bool static_tracepoint_marker_at (CORE_ADDR, | |
954 | struct static_tracepoint_marker *marker) | |
955 | override; | |
956 | ||
957 | std::vector<static_tracepoint_marker> | |
958 | static_tracepoint_markers_by_strid (const char *id) override; | |
959 | ||
960 | traceframe_info_up traceframe_info () override; | |
961 | ||
57810aa7 PA |
962 | bool use_agent (bool use) override; |
963 | bool can_use_agent () override; | |
f6ac5f3d | 964 | |
696c0d5e MM |
965 | struct btrace_target_info * |
966 | enable_btrace (thread_info *tp, const struct btrace_config *conf) override; | |
f6ac5f3d PA |
967 | |
968 | void disable_btrace (struct btrace_target_info *tinfo) override; | |
969 | ||
970 | void teardown_btrace (struct btrace_target_info *tinfo) override; | |
971 | ||
972 | enum btrace_error read_btrace (struct btrace_data *data, | |
973 | struct btrace_target_info *btinfo, | |
974 | enum btrace_read_type type) override; | |
975 | ||
976 | const struct btrace_config *btrace_conf (const struct btrace_target_info *) override; | |
57810aa7 | 977 | bool augmented_libraries_svr4_read () override; |
82d1f134 | 978 | void follow_fork (inferior *, ptid_t, target_waitkind, bool, bool) override; |
294c36eb | 979 | void follow_exec (inferior *, ptid_t, const char *) override; |
f6ac5f3d PA |
980 | int insert_fork_catchpoint (int) override; |
981 | int remove_fork_catchpoint (int) override; | |
982 | int insert_vfork_catchpoint (int) override; | |
983 | int remove_vfork_catchpoint (int) override; | |
984 | int insert_exec_catchpoint (int) override; | |
985 | int remove_exec_catchpoint (int) override; | |
986 | enum exec_direction_kind execution_direction () override; | |
987 | ||
dbe692af LM |
988 | bool supports_memory_tagging () override; |
989 | ||
990 | bool fetch_memtags (CORE_ADDR address, size_t len, | |
991 | gdb::byte_vector &tags, int type) override; | |
992 | ||
993 | bool store_memtags (CORE_ADDR address, size_t len, | |
994 | const gdb::byte_vector &tags, int type) override; | |
995 | ||
6b8edb51 PA |
996 | public: /* Remote specific methods. */ |
997 | ||
998 | void remote_download_command_source (int num, ULONGEST addr, | |
999 | struct command_line *cmds); | |
1000 | ||
1001 | void remote_file_put (const char *local_file, const char *remote_file, | |
1002 | int from_tty); | |
1003 | void remote_file_get (const char *remote_file, const char *local_file, | |
1004 | int from_tty); | |
1005 | void remote_file_delete (const char *remote_file, int from_tty); | |
1006 | ||
1007 | int remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
b872057a | 1008 | ULONGEST offset, fileio_error *remote_errno); |
6b8edb51 | 1009 | int remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, |
b872057a | 1010 | ULONGEST offset, fileio_error *remote_errno); |
6b8edb51 | 1011 | int remote_hostio_pread_vFile (int fd, gdb_byte *read_buf, int len, |
b872057a | 1012 | ULONGEST offset, fileio_error *remote_errno); |
6b8edb51 PA |
1013 | |
1014 | int remote_hostio_send_command (int command_bytes, int which_packet, | |
b872057a | 1015 | fileio_error *remote_errno, const char **attachment, |
6b8edb51 PA |
1016 | int *attachment_len); |
1017 | int remote_hostio_set_filesystem (struct inferior *inf, | |
b872057a | 1018 | fileio_error *remote_errno); |
6b8edb51 PA |
1019 | /* We should get rid of this and use fileio_open directly. */ |
1020 | int remote_hostio_open (struct inferior *inf, const char *filename, | |
1021 | int flags, int mode, int warn_if_slow, | |
b872057a SM |
1022 | fileio_error *remote_errno); |
1023 | int remote_hostio_close (int fd, fileio_error *remote_errno); | |
6b8edb51 PA |
1024 | |
1025 | int remote_hostio_unlink (inferior *inf, const char *filename, | |
b872057a | 1026 | fileio_error *remote_errno); |
6b8edb51 PA |
1027 | |
1028 | struct remote_state *get_remote_state (); | |
1029 | ||
1030 | long get_remote_packet_size (void); | |
1031 | long get_memory_packet_size (struct memory_packet_config *config); | |
1032 | ||
1033 | long get_memory_write_packet_size (); | |
1034 | long get_memory_read_packet_size (); | |
1035 | ||
1036 | char *append_pending_thread_resumptions (char *p, char *endp, | |
1037 | ptid_t ptid); | |
d9f719f1 | 1038 | static void open_1 (const char *name, int from_tty, int extended_p); |
f6ac5f3d | 1039 | void start_remote (int from_tty, int extended_p); |
00431a78 | 1040 | void remote_detach_1 (struct inferior *inf, int from_tty); |
6b8edb51 PA |
1041 | |
1042 | char *append_resumption (char *p, char *endp, | |
1043 | ptid_t ptid, int step, gdb_signal siggnal); | |
d51926f0 | 1044 | int remote_resume_with_vcont (ptid_t scope_ptid, int step, |
6b8edb51 PA |
1045 | gdb_signal siggnal); |
1046 | ||
64d38fdd | 1047 | thread_info *add_current_inferior_and_thread (const char *wait_status); |
6b8edb51 PA |
1048 | |
1049 | ptid_t wait_ns (ptid_t ptid, struct target_waitstatus *status, | |
b60cea74 | 1050 | target_wait_flags options); |
6b8edb51 | 1051 | ptid_t wait_as (ptid_t ptid, target_waitstatus *status, |
b60cea74 | 1052 | target_wait_flags options); |
6b8edb51 PA |
1053 | |
1054 | ptid_t process_stop_reply (struct stop_reply *stop_reply, | |
1055 | target_waitstatus *status); | |
1056 | ||
8f66807b | 1057 | ptid_t select_thread_for_ambiguous_stop_reply |
c272a98c | 1058 | (const struct target_waitstatus &status); |
8f66807b | 1059 | |
8a82de58 | 1060 | void remote_notice_new_inferior (ptid_t currthread, bool executing); |
6b8edb51 | 1061 | |
1edb66d8 | 1062 | void print_one_stopped_thread (thread_info *thread); |
6b8edb51 PA |
1063 | void process_initial_stop_replies (int from_tty); |
1064 | ||
b622494e AB |
1065 | thread_info *remote_add_thread (ptid_t ptid, bool running, bool executing, |
1066 | bool silent_p); | |
6b8edb51 PA |
1067 | |
1068 | void btrace_sync_conf (const btrace_config *conf); | |
1069 | ||
1070 | void remote_btrace_maybe_reopen (); | |
1071 | ||
1072 | void remove_new_fork_children (threads_listing_context *context); | |
28561a65 | 1073 | void kill_new_fork_children (inferior *inf); |
6b8edb51 PA |
1074 | void discard_pending_stop_replies (struct inferior *inf); |
1075 | int stop_reply_queue_length (); | |
1076 | ||
1077 | void check_pending_events_prevent_wildcard_vcont | |
2f63ec5c | 1078 | (bool *may_global_wildcard_vcont); |
6b8edb51 PA |
1079 | |
1080 | void discard_pending_stop_replies_in_queue (); | |
1081 | struct stop_reply *remote_notif_remove_queued_reply (ptid_t ptid); | |
1082 | struct stop_reply *queued_stop_reply (ptid_t ptid); | |
1083 | int peek_stop_reply (ptid_t ptid); | |
bb277751 | 1084 | void remote_parse_stop_reply (const char *buf, stop_reply *event); |
6b8edb51 PA |
1085 | |
1086 | void remote_stop_ns (ptid_t ptid); | |
1087 | void remote_interrupt_as (); | |
1088 | void remote_interrupt_ns (); | |
1089 | ||
1090 | char *remote_get_noisy_reply (); | |
1091 | int remote_query_attached (int pid); | |
9ab8741a | 1092 | inferior *remote_add_inferior (bool fake_pid_p, int pid, int attached, |
6b8edb51 PA |
1093 | int try_open_exec); |
1094 | ||
1095 | ptid_t remote_current_thread (ptid_t oldpid); | |
e3b2741b | 1096 | ptid_t get_current_thread (const char *wait_status); |
6b8edb51 PA |
1097 | |
1098 | void set_thread (ptid_t ptid, int gen); | |
1099 | void set_general_thread (ptid_t ptid); | |
1100 | void set_continue_thread (ptid_t ptid); | |
1101 | void set_general_process (); | |
1102 | ||
1103 | char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); | |
1104 | ||
cecb1912 | 1105 | int remote_unpack_thread_info_response (const char *pkt, threadref *expectedref, |
6b8edb51 PA |
1106 | gdb_ext_thread_info *info); |
1107 | int remote_get_threadinfo (threadref *threadid, int fieldset, | |
1108 | gdb_ext_thread_info *info); | |
1109 | ||
cecb1912 | 1110 | int parse_threadlist_response (const char *pkt, int result_limit, |
6b8edb51 PA |
1111 | threadref *original_echo, |
1112 | threadref *resultlist, | |
1113 | int *doneflag); | |
1114 | int remote_get_threadlist (int startflag, threadref *nextthread, | |
1115 | int result_limit, int *done, int *result_count, | |
1116 | threadref *threadlist); | |
1117 | ||
1118 | int remote_threadlist_iterator (rmt_thread_action stepfunction, | |
1119 | void *context, int looplimit); | |
1120 | ||
1121 | int remote_get_threads_with_ql (threads_listing_context *context); | |
1122 | int remote_get_threads_with_qxfer (threads_listing_context *context); | |
1123 | int remote_get_threads_with_qthreadinfo (threads_listing_context *context); | |
1124 | ||
1125 | void extended_remote_restart (); | |
1126 | ||
1127 | void get_offsets (); | |
1128 | ||
1129 | void remote_check_symbols (); | |
1130 | ||
1131 | void remote_supported_packet (const struct protocol_feature *feature, | |
1132 | enum packet_support support, | |
1133 | const char *argument); | |
1134 | ||
1135 | void remote_query_supported (); | |
1136 | ||
1137 | void remote_packet_size (const protocol_feature *feature, | |
1138 | packet_support support, const char *value); | |
1139 | ||
1140 | void remote_serial_quit_handler (); | |
1141 | ||
1142 | void remote_detach_pid (int pid); | |
1143 | ||
1144 | void remote_vcont_probe (); | |
1145 | ||
1146 | void remote_resume_with_hc (ptid_t ptid, int step, | |
1147 | gdb_signal siggnal); | |
1148 | ||
1149 | void send_interrupt_sequence (); | |
1150 | void interrupt_query (); | |
1151 | ||
42938c1a | 1152 | void remote_notif_get_pending_events (const notif_client *nc); |
6b8edb51 PA |
1153 | |
1154 | int fetch_register_using_p (struct regcache *regcache, | |
1155 | packet_reg *reg); | |
1156 | int send_g_packet (); | |
1157 | void process_g_packet (struct regcache *regcache); | |
1158 | void fetch_registers_using_g (struct regcache *regcache); | |
1159 | int store_register_using_P (const struct regcache *regcache, | |
1160 | packet_reg *reg); | |
1161 | void store_registers_using_G (const struct regcache *regcache); | |
1162 | ||
1163 | void set_remote_traceframe (); | |
1164 | ||
1165 | void check_binary_download (CORE_ADDR addr); | |
1166 | ||
1167 | target_xfer_status remote_write_bytes_aux (const char *header, | |
1168 | CORE_ADDR memaddr, | |
1169 | const gdb_byte *myaddr, | |
1170 | ULONGEST len_units, | |
1171 | int unit_size, | |
1172 | ULONGEST *xfered_len_units, | |
1173 | char packet_format, | |
1174 | int use_length); | |
1175 | ||
1176 | target_xfer_status remote_write_bytes (CORE_ADDR memaddr, | |
1177 | const gdb_byte *myaddr, ULONGEST len, | |
1178 | int unit_size, ULONGEST *xfered_len); | |
1179 | ||
1180 | target_xfer_status remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, | |
1181 | ULONGEST len_units, | |
1182 | int unit_size, ULONGEST *xfered_len_units); | |
1183 | ||
1184 | target_xfer_status remote_xfer_live_readonly_partial (gdb_byte *readbuf, | |
1185 | ULONGEST memaddr, | |
1186 | ULONGEST len, | |
1187 | int unit_size, | |
1188 | ULONGEST *xfered_len); | |
1189 | ||
1190 | target_xfer_status remote_read_bytes (CORE_ADDR memaddr, | |
1191 | gdb_byte *myaddr, ULONGEST len, | |
1192 | int unit_size, | |
1193 | ULONGEST *xfered_len); | |
1194 | ||
1195 | packet_result remote_send_printf (const char *format, ...) | |
1196 | ATTRIBUTE_PRINTF (2, 3); | |
1197 | ||
1198 | target_xfer_status remote_flash_write (ULONGEST address, | |
1199 | ULONGEST length, ULONGEST *xfered_len, | |
1200 | const gdb_byte *data); | |
1201 | ||
1202 | int readchar (int timeout); | |
1203 | ||
1204 | void remote_serial_write (const char *str, int len); | |
1205 | ||
1206 | int putpkt (const char *buf); | |
1207 | int putpkt_binary (const char *buf, int cnt); | |
1208 | ||
8d64371b TT |
1209 | int putpkt (const gdb::char_vector &buf) |
1210 | { | |
1211 | return putpkt (buf.data ()); | |
1212 | } | |
1213 | ||
6b8edb51 | 1214 | void skip_frame (); |
8d64371b TT |
1215 | long read_frame (gdb::char_vector *buf_p); |
1216 | void getpkt (gdb::char_vector *buf, int forever); | |
1217 | int getpkt_or_notif_sane_1 (gdb::char_vector *buf, int forever, | |
6b8edb51 | 1218 | int expecting_notif, int *is_notif); |
8d64371b TT |
1219 | int getpkt_sane (gdb::char_vector *buf, int forever); |
1220 | int getpkt_or_notif_sane (gdb::char_vector *buf, int forever, | |
6b8edb51 PA |
1221 | int *is_notif); |
1222 | int remote_vkill (int pid); | |
1223 | void remote_kill_k (); | |
1224 | ||
1225 | void extended_remote_disable_randomization (int val); | |
1226 | int extended_remote_run (const std::string &args); | |
1227 | ||
1228 | void send_environment_packet (const char *action, | |
1229 | const char *packet, | |
1230 | const char *value); | |
1231 | ||
1232 | void extended_remote_environment_support (); | |
3c69da40 | 1233 | void extended_remote_set_inferior_cwd (); |
80152258 | 1234 | |
3c69da40 PA |
1235 | target_xfer_status remote_write_qxfer (const char *object_name, |
1236 | const char *annex, | |
1237 | const gdb_byte *writebuf, | |
1238 | ULONGEST offset, LONGEST len, | |
1239 | ULONGEST *xfered_len, | |
ff52c073 | 1240 | const unsigned int which_packet); |
43c3a0e4 | 1241 | |
3c69da40 PA |
1242 | target_xfer_status remote_read_qxfer (const char *object_name, |
1243 | const char *annex, | |
1244 | gdb_byte *readbuf, ULONGEST offset, | |
1245 | LONGEST len, | |
1246 | ULONGEST *xfered_len, | |
ff52c073 | 1247 | const unsigned int which_packet); |
43c3a0e4 | 1248 | |
3c69da40 | 1249 | void push_stop_reply (struct stop_reply *new_event); |
43c3a0e4 | 1250 | |
3c69da40 | 1251 | bool vcont_r_supported (); |
43c3a0e4 | 1252 | |
ff52c073 CS |
1253 | remote_features m_features; |
1254 | ||
288712bb AB |
1255 | private: |
1256 | ||
1257 | bool start_remote_1 (int from_tty, int extended_p); | |
43c3a0e4 | 1258 | |
3c69da40 PA |
1259 | /* The remote state. Don't reference this directly. Use the |
1260 | get_remote_state method instead. */ | |
1261 | remote_state m_remote_state; | |
43c3a0e4 PA |
1262 | }; |
1263 | ||
3c69da40 PA |
1264 | static const target_info extended_remote_target_info = { |
1265 | "extended-remote", | |
ae9adb36 | 1266 | N_("Extended remote target using gdb-specific protocol"), |
3c69da40 PA |
1267 | remote_doc |
1268 | }; | |
ea9c271d | 1269 | |
3c69da40 PA |
1270 | /* Set up the extended remote target by extending the standard remote |
1271 | target and adding to it. */ | |
1272 | ||
1273 | class extended_remote_target final : public remote_target | |
ea9c271d | 1274 | { |
9d6eea31 | 1275 | public: |
3c69da40 PA |
1276 | const target_info &info () const override |
1277 | { return extended_remote_target_info; } | |
9d6eea31 | 1278 | |
3c69da40 PA |
1279 | /* Open an extended-remote connection. */ |
1280 | static void open (const char *, int); | |
de44f5a7 | 1281 | |
3c69da40 PA |
1282 | bool can_create_inferior () override { return true; } |
1283 | void create_inferior (const char *, const std::string &, | |
1284 | char **, int) override; | |
9d6eea31 | 1285 | |
3c69da40 | 1286 | void detach (inferior *, int) override; |
9d6eea31 | 1287 | |
3c69da40 PA |
1288 | bool can_attach () override { return true; } |
1289 | void attach (const char *, int) override; | |
be2a5f71 | 1290 | |
3c69da40 PA |
1291 | void post_attach (int) override; |
1292 | bool supports_disable_randomization () override; | |
1293 | }; | |
1e51243a | 1294 | |
a4543480 SM |
1295 | struct stop_reply : public notif_event |
1296 | { | |
1297 | ~stop_reply (); | |
1298 | ||
1299 | /* The identifier of the thread about this event */ | |
1300 | ptid_t ptid; | |
1301 | ||
1302 | /* The remote state this event is associated with. When the remote | |
1303 | connection, represented by a remote_state object, is closed, | |
1304 | all the associated stop_reply events should be released. */ | |
1305 | struct remote_state *rs; | |
1306 | ||
1307 | struct target_waitstatus ws; | |
1308 | ||
1309 | /* The architecture associated with the expedited registers. */ | |
1310 | gdbarch *arch; | |
1311 | ||
1312 | /* Expedited registers. This makes remote debugging a bit more | |
1313 | efficient for those targets that provide critical registers as | |
1314 | part of their normal status mechanism (as another roundtrip to | |
1315 | fetch them is avoided). */ | |
1316 | std::vector<cached_reg_t> regcache; | |
1317 | ||
1318 | enum target_stop_reason stop_reason; | |
1319 | ||
1320 | CORE_ADDR watch_data_address; | |
1321 | ||
1322 | int core; | |
1323 | }; | |
1324 | ||
06c7226e SM |
1325 | /* Return TARGET as a remote_target if it is one, else nullptr. */ |
1326 | ||
1327 | static remote_target * | |
1328 | as_remote_target (process_stratum_target *target) | |
1329 | { | |
1330 | return dynamic_cast<remote_target *> (target); | |
1331 | } | |
1332 | ||
24b2de7b AB |
1333 | /* See remote.h. */ |
1334 | ||
1335 | bool | |
1336 | is_remote_target (process_stratum_target *target) | |
1337 | { | |
06c7226e | 1338 | return as_remote_target (target) != nullptr; |
24b2de7b AB |
1339 | } |
1340 | ||
3c69da40 | 1341 | /* Per-program-space data key. */ |
08b8a139 | 1342 | static const registry<program_space>::key<char, gdb::xfree_deleter<char>> |
7b4a314f | 1343 | remote_pspace_data; |
2d717e4f | 1344 | |
3c69da40 PA |
1345 | /* The variable registered as the control variable used by the |
1346 | remote exec-file commands. While the remote exec-file setting is | |
1347 | per-program-space, the set/show machinery uses this as the | |
1348 | location of the remote exec-file value. */ | |
e0700ba4 | 1349 | static std::string remote_exec_file_var; |
a6f3e723 | 1350 | |
3c69da40 PA |
1351 | /* The size to align memory write packets, when practical. The protocol |
1352 | does not guarantee any alignment, and gdb will generate short | |
1353 | writes and unaligned writes, but even as a best-effort attempt this | |
1354 | can improve bulk transfers. For instance, if a write is misaligned | |
1355 | relative to the target's data bus, the stub may need to make an extra | |
1356 | round trip fetching data from the target. This doesn't make a | |
1357 | huge difference, but it's easy to do, so we try to be helpful. | |
82f73884 | 1358 | |
3c69da40 PA |
1359 | The alignment chosen is arbitrary; usually data bus width is |
1360 | important here, not the possibly larger cache line size. */ | |
1361 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
82f73884 | 1362 | |
3c69da40 | 1363 | /* Prototypes for local functions. */ |
74531fed | 1364 | |
3c69da40 | 1365 | static int hexnumlen (ULONGEST num); |
782b2b07 | 1366 | |
3c69da40 | 1367 | static int stubhex (int ch); |
5d93a237 | 1368 | |
3c69da40 | 1369 | static int hexnumstr (char *, ULONGEST); |
048094ac | 1370 | |
3c69da40 | 1371 | static int hexnumnstr (char *, ULONGEST, int); |
47f8a51d | 1372 | |
3c69da40 | 1373 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
262e1174 | 1374 | |
cecb1912 | 1375 | static int stub_unpack_int (const char *buff, int fieldlength); |
5e4a05c4 | 1376 | |
ff52c073 CS |
1377 | static void set_remote_protocol_packet_cmd (const char *args, int from_tty, |
1378 | cmd_list_element *c); | |
1379 | ||
1380 | static void show_packet_config_cmd (ui_file *file, | |
1381 | const unsigned int which_packet, | |
1382 | remote_target *remote); | |
b73be471 | 1383 | |
3c69da40 PA |
1384 | static void show_remote_protocol_packet_cmd (struct ui_file *file, |
1385 | int from_tty, | |
1386 | struct cmd_list_element *c, | |
1387 | const char *value); | |
8e88304f | 1388 | |
3c69da40 | 1389 | static ptid_t read_ptid (const char *buf, const char **obuf); |
3a00c802 | 1390 | |
3c69da40 | 1391 | static void remote_async_inferior_event_handler (gdb_client_data); |
b80fafe3 | 1392 | |
eefce37f | 1393 | static bool remote_read_description_p (struct target_ops *target); |
88b496c3 | 1394 | |
05be00a8 | 1395 | static void remote_console_output (const char *msg); |
5965e028 | 1396 | |
3c69da40 | 1397 | static void remote_btrace_reset (remote_state *rs); |
f4abbc16 | 1398 | |
5b6d1e4f | 1399 | static void remote_unpush_and_throw (remote_target *target); |
15a201c8 | 1400 | |
3c69da40 | 1401 | /* For "remote". */ |
80152258 | 1402 | |
3c69da40 | 1403 | static struct cmd_list_element *remote_cmdlist; |
9d6eea31 | 1404 | |
3c69da40 | 1405 | /* For "set remote" and "show remote". */ |
6b8edb51 | 1406 | |
3c69da40 PA |
1407 | static struct cmd_list_element *remote_set_cmdlist; |
1408 | static struct cmd_list_element *remote_show_cmdlist; | |
6b8edb51 | 1409 | |
3c69da40 | 1410 | /* Controls whether GDB is willing to use range stepping. */ |
6b8edb51 | 1411 | |
491144b5 | 1412 | static bool use_range_stepping = true; |
3c69da40 | 1413 | |
c9d22089 SM |
1414 | /* From the remote target's point of view, each thread is in one of these three |
1415 | states. */ | |
1416 | enum class resume_state | |
1417 | { | |
1418 | /* Not resumed - we haven't been asked to resume this thread. */ | |
1419 | NOT_RESUMED, | |
1420 | ||
1421 | /* We have been asked to resume this thread, but haven't sent a vCont action | |
1422 | for it yet. We'll need to consider it next time commit_resume is | |
1423 | called. */ | |
1424 | RESUMED_PENDING_VCONT, | |
1425 | ||
1426 | /* We have been asked to resume this thread, and we have sent a vCont action | |
1427 | for it. */ | |
1428 | RESUMED, | |
1429 | }; | |
1430 | ||
1431 | /* Information about a thread's pending vCont-resume. Used when a thread is in | |
1432 | the remote_resume_state::RESUMED_PENDING_VCONT state. remote_target::resume | |
1433 | stores this information which is then picked up by | |
1434 | remote_target::commit_resume to know which is the proper action for this | |
1435 | thread to include in the vCont packet. */ | |
1436 | struct resumed_pending_vcont_info | |
1437 | { | |
1438 | /* True if the last resume call for this thread was a step request, false | |
1439 | if a continue request. */ | |
1440 | bool step; | |
1441 | ||
1442 | /* The signal specified in the last resume call for this thread. */ | |
1443 | gdb_signal sig; | |
1444 | }; | |
1445 | ||
7aabaf9d SM |
1446 | /* Private data that we'll store in (struct thread_info)->priv. */ |
1447 | struct remote_thread_info : public private_thread_info | |
dc146f7c | 1448 | { |
7aabaf9d SM |
1449 | std::string extra; |
1450 | std::string name; | |
1451 | int core = -1; | |
799a2abe | 1452 | |
f6327dcb KB |
1453 | /* Thread handle, perhaps a pthread_t or thread_t value, stored as a |
1454 | sequence of bytes. */ | |
7aabaf9d | 1455 | gdb::byte_vector thread_handle; |
f6327dcb | 1456 | |
799a2abe | 1457 | /* Whether the target stopped for a breakpoint/watchpoint. */ |
7aabaf9d | 1458 | enum target_stop_reason stop_reason = TARGET_STOPPED_BY_NO_REASON; |
799a2abe PA |
1459 | |
1460 | /* This is set to the data address of the access causing the target | |
1461 | to stop for a watchpoint. */ | |
7aabaf9d | 1462 | CORE_ADDR watch_data_address = 0; |
85ad3aaf | 1463 | |
c9d22089 | 1464 | /* Get the thread's resume state. */ |
a6c11cbb | 1465 | enum resume_state get_resume_state () const |
c9d22089 SM |
1466 | { |
1467 | return m_resume_state; | |
1468 | } | |
1469 | ||
1470 | /* Put the thread in the NOT_RESUMED state. */ | |
1471 | void set_not_resumed () | |
1472 | { | |
1473 | m_resume_state = resume_state::NOT_RESUMED; | |
1474 | } | |
85ad3aaf | 1475 | |
c9d22089 SM |
1476 | /* Put the thread in the RESUMED_PENDING_VCONT state. */ |
1477 | void set_resumed_pending_vcont (bool step, gdb_signal sig) | |
1478 | { | |
1479 | m_resume_state = resume_state::RESUMED_PENDING_VCONT; | |
1480 | m_resumed_pending_vcont_info.step = step; | |
1481 | m_resumed_pending_vcont_info.sig = sig; | |
1482 | } | |
85ad3aaf | 1483 | |
c9d22089 | 1484 | /* Get the information this thread's pending vCont-resumption. |
85ad3aaf | 1485 | |
c9d22089 SM |
1486 | Must only be called if the thread is in the RESUMED_PENDING_VCONT resume |
1487 | state. */ | |
1488 | const struct resumed_pending_vcont_info &resumed_pending_vcont_info () const | |
1489 | { | |
1490 | gdb_assert (m_resume_state == resume_state::RESUMED_PENDING_VCONT); | |
1491 | ||
1492 | return m_resumed_pending_vcont_info; | |
1493 | } | |
1494 | ||
1495 | /* Put the thread in the VCONT_RESUMED state. */ | |
1496 | void set_resumed () | |
1497 | { | |
1498 | m_resume_state = resume_state::RESUMED; | |
1499 | } | |
1500 | ||
1501 | private: | |
1502 | /* Resume state for this thread. This is used to implement vCont action | |
1503 | coalescing (only when the target operates in non-stop mode). | |
1504 | ||
1505 | remote_target::resume moves the thread to the RESUMED_PENDING_VCONT state, | |
1506 | which notes that this thread must be considered in the next commit_resume | |
1507 | call. | |
1508 | ||
1509 | remote_target::commit_resume sends a vCont packet with actions for the | |
1510 | threads in the RESUMED_PENDING_VCONT state and moves them to the | |
1511 | VCONT_RESUMED state. | |
1512 | ||
1513 | When reporting a stop to the core for a thread, that thread is moved back | |
1514 | to the NOT_RESUMED state. */ | |
1515 | enum resume_state m_resume_state = resume_state::NOT_RESUMED; | |
1516 | ||
1517 | /* Extra info used if the thread is in the RESUMED_PENDING_VCONT state. */ | |
1518 | struct resumed_pending_vcont_info m_resumed_pending_vcont_info; | |
dc146f7c VP |
1519 | }; |
1520 | ||
de44f5a7 | 1521 | remote_state::remote_state () |
8d64371b | 1522 | : buf (400) |
de44f5a7 | 1523 | { |
de44f5a7 PA |
1524 | } |
1525 | ||
1526 | remote_state::~remote_state () | |
1527 | { | |
1528 | xfree (this->last_pass_packet); | |
1529 | xfree (this->last_program_signals_packet); | |
de44f5a7 PA |
1530 | xfree (this->finished_object); |
1531 | xfree (this->finished_annex); | |
cf792862 TT |
1532 | } |
1533 | ||
35b1e5cc SS |
1534 | /* Utility: generate error from an incoming stub packet. */ |
1535 | static void | |
1536 | trace_error (char *buf) | |
1537 | { | |
1538 | if (*buf++ != 'E') | |
1539 | return; /* not an error msg */ | |
1540 | switch (*buf) | |
1541 | { | |
1542 | case '1': /* malformed packet error */ | |
1543 | if (*++buf == '0') /* general case: */ | |
1544 | error (_("remote.c: error in outgoing packet.")); | |
1545 | else | |
1546 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
1547 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
1548 | default: |
1549 | error (_("Target returns error code '%s'."), buf); | |
1550 | } | |
1551 | } | |
1552 | ||
1553 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
b6bb3468 | 1554 | |
6b8edb51 PA |
1555 | char * |
1556 | remote_target::remote_get_noisy_reply () | |
35b1e5cc | 1557 | { |
b6bb3468 PA |
1558 | struct remote_state *rs = get_remote_state (); |
1559 | ||
35b1e5cc SS |
1560 | do /* Loop on reply from remote stub. */ |
1561 | { | |
1562 | char *buf; | |
a744cf53 | 1563 | |
0df8b418 | 1564 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b TT |
1565 | getpkt (&rs->buf, 0); |
1566 | buf = rs->buf.data (); | |
ad91cd99 | 1567 | if (buf[0] == 'E') |
35b1e5cc | 1568 | trace_error (buf); |
61012eef | 1569 | else if (startswith (buf, "qRelocInsn:")) |
dde08ee1 PA |
1570 | { |
1571 | ULONGEST ul; | |
1572 | CORE_ADDR from, to, org_to; | |
256642e8 | 1573 | const char *p, *pp; |
dde08ee1 | 1574 | int adjusted_size = 0; |
7556d4a4 | 1575 | int relocated = 0; |
dde08ee1 PA |
1576 | |
1577 | p = buf + strlen ("qRelocInsn:"); | |
1578 | pp = unpack_varlen_hex (p, &ul); | |
1579 | if (*pp != ';') | |
cb91c06a | 1580 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
1581 | from = ul; |
1582 | ||
1583 | p = pp + 1; | |
a9cbf802 | 1584 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
1585 | to = ul; |
1586 | ||
1587 | org_to = to; | |
1588 | ||
a70b8144 | 1589 | try |
dde08ee1 | 1590 | { |
f5656ead | 1591 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
7556d4a4 | 1592 | relocated = 1; |
dde08ee1 | 1593 | } |
230d2906 | 1594 | catch (const gdb_exception &ex) |
7556d4a4 PA |
1595 | { |
1596 | if (ex.error == MEMORY_ERROR) | |
1597 | { | |
1598 | /* Propagate memory errors silently back to the | |
1599 | target. The stub may have limited the range of | |
1600 | addresses we can write to, for example. */ | |
1601 | } | |
1602 | else | |
1603 | { | |
1604 | /* Something unexpectedly bad happened. Be verbose | |
1605 | so we can tell what, and propagate the error back | |
1606 | to the stub, so it doesn't get stuck waiting for | |
1607 | a response. */ | |
1608 | exception_fprintf (gdb_stderr, ex, | |
1609 | _("warning: relocating instruction: ")); | |
1610 | } | |
1611 | putpkt ("E01"); | |
1612 | } | |
1613 | ||
1614 | if (relocated) | |
dde08ee1 PA |
1615 | { |
1616 | adjusted_size = to - org_to; | |
1617 | ||
8d64371b | 1618 | xsnprintf (buf, rs->buf.size (), "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
1619 | putpkt (buf); |
1620 | } | |
dde08ee1 | 1621 | } |
ad91cd99 | 1622 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
1623 | remote_console_output (buf + 1); /* 'O' message from stub */ |
1624 | else | |
0df8b418 | 1625 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
1626 | } |
1627 | while (1); | |
1628 | } | |
3c3bea1c | 1629 | |
9d6eea31 PA |
1630 | struct remote_arch_state * |
1631 | remote_state::get_remote_arch_state (struct gdbarch *gdbarch) | |
d01949b6 | 1632 | { |
43c3a0e4 PA |
1633 | remote_arch_state *rsa; |
1634 | ||
1635 | auto it = this->m_arch_states.find (gdbarch); | |
1636 | if (it == this->m_arch_states.end ()) | |
9d6eea31 | 1637 | { |
43c3a0e4 PA |
1638 | auto p = this->m_arch_states.emplace (std::piecewise_construct, |
1639 | std::forward_as_tuple (gdbarch), | |
1640 | std::forward_as_tuple (gdbarch)); | |
1641 | rsa = &p.first->second; | |
9d6eea31 PA |
1642 | |
1643 | /* Make sure that the packet buffer is plenty big enough for | |
1644 | this architecture. */ | |
8d64371b TT |
1645 | if (this->buf.size () < rsa->remote_packet_size) |
1646 | this->buf.resize (2 * rsa->remote_packet_size); | |
9d6eea31 | 1647 | } |
43c3a0e4 PA |
1648 | else |
1649 | rsa = &it->second; | |
1650 | ||
1651 | return rsa; | |
d01949b6 AC |
1652 | } |
1653 | ||
0b83947e DJ |
1654 | /* Fetch the global remote target state. */ |
1655 | ||
6b8edb51 PA |
1656 | remote_state * |
1657 | remote_target::get_remote_state () | |
0b83947e DJ |
1658 | { |
1659 | /* Make sure that the remote architecture state has been | |
1660 | initialized, because doing so might reallocate rs->buf. Any | |
1661 | function which calls getpkt also needs to be mindful of changes | |
1662 | to rs->buf, but this call limits the number of places which run | |
1663 | into trouble. */ | |
3c69da40 | 1664 | m_remote_state.get_remote_arch_state (target_gdbarch ()); |
0b83947e | 1665 | |
3c69da40 | 1666 | return &m_remote_state; |
0b83947e DJ |
1667 | } |
1668 | ||
94585166 DB |
1669 | /* Fetch the remote exec-file from the current program space. */ |
1670 | ||
1671 | static const char * | |
1672 | get_remote_exec_file (void) | |
1673 | { | |
1674 | char *remote_exec_file; | |
1675 | ||
7b4a314f | 1676 | remote_exec_file = remote_pspace_data.get (current_program_space); |
94585166 DB |
1677 | if (remote_exec_file == NULL) |
1678 | return ""; | |
1679 | ||
1680 | return remote_exec_file; | |
1681 | } | |
1682 | ||
1683 | /* Set the remote exec file for PSPACE. */ | |
1684 | ||
1685 | static void | |
1686 | set_pspace_remote_exec_file (struct program_space *pspace, | |
7b4a314f | 1687 | const char *remote_exec_file) |
94585166 | 1688 | { |
7b4a314f | 1689 | char *old_file = remote_pspace_data.get (pspace); |
94585166 DB |
1690 | |
1691 | xfree (old_file); | |
7b4a314f | 1692 | remote_pspace_data.set (pspace, xstrdup (remote_exec_file)); |
94585166 DB |
1693 | } |
1694 | ||
1695 | /* The "set/show remote exec-file" set command hook. */ | |
1696 | ||
1697 | static void | |
eb4c3f4a | 1698 | set_remote_exec_file (const char *ignored, int from_tty, |
94585166 DB |
1699 | struct cmd_list_element *c) |
1700 | { | |
e0700ba4 SM |
1701 | set_pspace_remote_exec_file (current_program_space, |
1702 | remote_exec_file_var.c_str ()); | |
94585166 DB |
1703 | } |
1704 | ||
1705 | /* The "set/show remote exec-file" show command hook. */ | |
1706 | ||
1707 | static void | |
1708 | show_remote_exec_file (struct ui_file *file, int from_tty, | |
1709 | struct cmd_list_element *cmd, const char *value) | |
1710 | { | |
6cb06a8c | 1711 | gdb_printf (file, "%s\n", get_remote_exec_file ()); |
94585166 DB |
1712 | } |
1713 | ||
c21236dc PA |
1714 | static int |
1715 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 1716 | { |
74ca34ce | 1717 | int regnum, num_remote_regs, offset; |
74ca34ce | 1718 | struct packet_reg **remote_regs; |
ea9c271d | 1719 | |
4a22f64d | 1720 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 1721 | { |
c21236dc | 1722 | struct packet_reg *r = ®s[regnum]; |
baef701f | 1723 | |
4a22f64d | 1724 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
1725 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
1726 | r->pnum = -1; | |
1727 | else | |
1728 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
1729 | ||
b323314b | 1730 | r->regnum = regnum; |
74ca34ce DJ |
1731 | } |
1732 | ||
1733 | /* Define the g/G packet format as the contents of each register | |
1734 | with a remote protocol number, in order of ascending protocol | |
1735 | number. */ | |
1736 | ||
224c3ddb | 1737 | remote_regs = XALLOCAVEC (struct packet_reg *, gdbarch_num_regs (gdbarch)); |
f57d151a | 1738 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 1739 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 1740 | regnum++) |
c21236dc PA |
1741 | if (regs[regnum].pnum != -1) |
1742 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 1743 | |
39ef2f62 CB |
1744 | std::sort (remote_regs, remote_regs + num_remote_regs, |
1745 | [] (const packet_reg *a, const packet_reg *b) | |
1746 | { return a->pnum < b->pnum; }); | |
74ca34ce DJ |
1747 | |
1748 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
1749 | { | |
1750 | remote_regs[regnum]->in_g_packet = 1; | |
1751 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 1752 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
1753 | } |
1754 | ||
c21236dc PA |
1755 | return offset; |
1756 | } | |
1757 | ||
1758 | /* Given the architecture described by GDBARCH, return the remote | |
1759 | protocol register's number and the register's offset in the g/G | |
1760 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
1761 | If the target does not have a mapping for REGNUM, return false, | |
1762 | otherwise, return true. */ | |
1763 | ||
1764 | int | |
1765 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
1766 | int *pnum, int *poffset) | |
1767 | { | |
c21236dc PA |
1768 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); |
1769 | ||
b80406ac | 1770 | std::vector<packet_reg> regs (gdbarch_num_regs (gdbarch)); |
c21236dc | 1771 | |
b80406ac | 1772 | map_regcache_remote_table (gdbarch, regs.data ()); |
c21236dc PA |
1773 | |
1774 | *pnum = regs[regnum].pnum; | |
1775 | *poffset = regs[regnum].offset; | |
1776 | ||
c21236dc PA |
1777 | return *pnum != -1; |
1778 | } | |
1779 | ||
9d6eea31 | 1780 | remote_arch_state::remote_arch_state (struct gdbarch *gdbarch) |
c21236dc | 1781 | { |
c21236dc PA |
1782 | /* Use the architecture to build a regnum<->pnum table, which will be |
1783 | 1:1 unless a feature set specifies otherwise. */ | |
9d6eea31 | 1784 | this->regs.reset (new packet_reg [gdbarch_num_regs (gdbarch)] ()); |
c21236dc | 1785 | |
74ca34ce DJ |
1786 | /* Record the maximum possible size of the g packet - it may turn out |
1787 | to be smaller. */ | |
9d6eea31 PA |
1788 | this->sizeof_g_packet |
1789 | = map_regcache_remote_table (gdbarch, this->regs.get ()); | |
74ca34ce | 1790 | |
0df8b418 | 1791 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
1792 | remote stubs have a hardwired buffer size of 400 bytes |
1793 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
1794 | as the maximum packet-size to ensure that the packet and an extra | |
1795 | NUL character can always fit in the buffer. This stops GDB | |
1796 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d | 1797 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
9d6eea31 | 1798 | this->remote_packet_size = 400 - 1; |
d01949b6 | 1799 | |
ea9c271d | 1800 | /* This one is filled in when a ``g'' packet is received. */ |
9d6eea31 | 1801 | this->actual_register_packet_size = 0; |
ea9c271d DJ |
1802 | |
1803 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
1804 | default, adjust the size accordingly. Remember that each byte is |
1805 | encoded as two characters. 32 is the overhead for the packet | |
1806 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 1807 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 1808 | little. */ |
9d6eea31 PA |
1809 | if (this->sizeof_g_packet > ((this->remote_packet_size - 32) / 2)) |
1810 | this->remote_packet_size = (this->sizeof_g_packet * 2 + 32); | |
ea9c271d DJ |
1811 | } |
1812 | ||
6b8edb51 PA |
1813 | /* Get a pointer to the current remote target. If not connected to a |
1814 | remote target, return NULL. */ | |
1815 | ||
1816 | static remote_target * | |
1817 | get_current_remote_target () | |
1818 | { | |
5b6d1e4f | 1819 | target_ops *proc_target = current_inferior ()->process_target (); |
6b8edb51 PA |
1820 | return dynamic_cast<remote_target *> (proc_target); |
1821 | } | |
1822 | ||
ea9c271d DJ |
1823 | /* Return the current allowed size of a remote packet. This is |
1824 | inferred from the current architecture, and should be used to | |
1825 | limit the length of outgoing packets. */ | |
6b8edb51 PA |
1826 | long |
1827 | remote_target::get_remote_packet_size () | |
ea9c271d | 1828 | { |
be2a5f71 | 1829 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 1830 | remote_arch_state *rsa = rs->get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1831 | |
be2a5f71 DJ |
1832 | if (rs->explicit_packet_size) |
1833 | return rs->explicit_packet_size; | |
1834 | ||
ea9c271d | 1835 | return rsa->remote_packet_size; |
d01949b6 AC |
1836 | } |
1837 | ||
ad10f812 | 1838 | static struct packet_reg * |
5cd63fda PA |
1839 | packet_reg_from_regnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
1840 | long regnum) | |
ad10f812 | 1841 | { |
5cd63fda | 1842 | if (regnum < 0 && regnum >= gdbarch_num_regs (gdbarch)) |
b323314b AC |
1843 | return NULL; |
1844 | else | |
ad10f812 | 1845 | { |
ea9c271d | 1846 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 1847 | |
b323314b AC |
1848 | gdb_assert (r->regnum == regnum); |
1849 | return r; | |
ad10f812 | 1850 | } |
ad10f812 AC |
1851 | } |
1852 | ||
1853 | static struct packet_reg * | |
5cd63fda PA |
1854 | packet_reg_from_pnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
1855 | LONGEST pnum) | |
ad10f812 | 1856 | { |
b323314b | 1857 | int i; |
a744cf53 | 1858 | |
5cd63fda | 1859 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
ad10f812 | 1860 | { |
ea9c271d | 1861 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 1862 | |
b323314b AC |
1863 | if (r->pnum == pnum) |
1864 | return r; | |
ad10f812 AC |
1865 | } |
1866 | return NULL; | |
d01949b6 AC |
1867 | } |
1868 | ||
9a7071a8 JB |
1869 | /* Allow the user to specify what sequence to send to the remote |
1870 | when he requests a program interruption: Although ^C is usually | |
1871 | what remote systems expect (this is the default, here), it is | |
1872 | sometimes preferable to send a break. On other systems such | |
1873 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
1874 | is required in order to interrupt the execution. */ | |
1875 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
1876 | const char interrupt_sequence_break[] = "BREAK"; | |
1877 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 1878 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
1879 | { |
1880 | interrupt_sequence_control_c, | |
1881 | interrupt_sequence_break, | |
1882 | interrupt_sequence_break_g, | |
1883 | NULL | |
1884 | }; | |
1885 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
1886 | ||
1887 | static void | |
1888 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
1889 | struct cmd_list_element *c, | |
1890 | const char *value) | |
1891 | { | |
1892 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
6cb06a8c TT |
1893 | gdb_printf (file, |
1894 | _("Send the ASCII ETX character (Ctrl-c) " | |
1895 | "to the remote target to interrupt the " | |
1896 | "execution of the program.\n")); | |
9a7071a8 | 1897 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
6cb06a8c TT |
1898 | gdb_printf (file, |
1899 | _("send a break signal to the remote target " | |
1900 | "to interrupt the execution of the program.\n")); | |
9a7071a8 | 1901 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
6cb06a8c TT |
1902 | gdb_printf (file, |
1903 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
1904 | "the remote target to interrupt the execution " | |
1905 | "of Linux kernel.\n")); | |
9a7071a8 | 1906 | else |
f34652de | 1907 | internal_error (_("Invalid value for interrupt_sequence_mode: %s."), |
9a7071a8 JB |
1908 | interrupt_sequence_mode); |
1909 | } | |
6426a772 | 1910 | |
9a7071a8 JB |
1911 | /* This boolean variable specifies whether interrupt_sequence is sent |
1912 | to the remote target when gdb connects to it. | |
1913 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
1914 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
491144b5 | 1915 | static bool interrupt_on_connect = false; |
c906108c | 1916 | |
9a7071a8 JB |
1917 | /* This variable is used to implement the "set/show remotebreak" commands. |
1918 | Since these commands are now deprecated in favor of "set/show remote | |
1919 | interrupt-sequence", it no longer has any effect on the code. */ | |
491144b5 | 1920 | static bool remote_break; |
c906108c | 1921 | |
9a7071a8 | 1922 | static void |
eb4c3f4a | 1923 | set_remotebreak (const char *args, int from_tty, struct cmd_list_element *c) |
9a7071a8 JB |
1924 | { |
1925 | if (remote_break) | |
1926 | interrupt_sequence_mode = interrupt_sequence_break; | |
1927 | else | |
1928 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
1929 | } | |
1930 | ||
1931 | static void | |
1932 | show_remotebreak (struct ui_file *file, int from_tty, | |
1933 | struct cmd_list_element *c, | |
1934 | const char *value) | |
1935 | { | |
1936 | } | |
1937 | ||
c906108c SS |
1938 | /* This variable sets the number of bits in an address that are to be |
1939 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 1940 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
1941 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
1942 | initial implementation of remote.c restricted the address sent in | |
1943 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
1944 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
1945 | address was never sent. Since fixing this bug may cause a break in | |
85102364 | 1946 | some remote targets this variable is principally provided to |
23860348 | 1947 | facilitate backward compatibility. */ |
c906108c | 1948 | |
883b9c6c | 1949 | static unsigned int remote_address_size; |
c906108c | 1950 | |
11cf8741 | 1951 | \f |
cc0be08f PA |
1952 | /* The default max memory-write-packet-size, when the setting is |
1953 | "fixed". The 16k is historical. (It came from older GDB's using | |
1954 | alloca for buffers and the knowledge (folklore?) that some hosts | |
1955 | don't cope very well with large alloca calls.) */ | |
1956 | #define DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED 16384 | |
a5c0808e PA |
1957 | |
1958 | /* The minimum remote packet size for memory transfers. Ensures we | |
1959 | can write at least one byte. */ | |
1960 | #define MIN_MEMORY_PACKET_SIZE 20 | |
1961 | ||
cc0be08f PA |
1962 | /* Get the memory packet size, assuming it is fixed. */ |
1963 | ||
1964 | static long | |
1965 | get_fixed_memory_packet_size (struct memory_packet_config *config) | |
1966 | { | |
1967 | gdb_assert (config->fixed_p); | |
1968 | ||
1969 | if (config->size <= 0) | |
1970 | return DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED; | |
1971 | else | |
1972 | return config->size; | |
1973 | } | |
1974 | ||
11cf8741 JM |
1975 | /* Compute the current size of a read/write packet. Since this makes |
1976 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
1977 | ||
6b8edb51 PA |
1978 | long |
1979 | remote_target::get_memory_packet_size (struct memory_packet_config *config) | |
11cf8741 | 1980 | { |
d01949b6 | 1981 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 1982 | remote_arch_state *rsa = rs->get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1983 | |
11cf8741 JM |
1984 | long what_they_get; |
1985 | if (config->fixed_p) | |
cc0be08f | 1986 | what_they_get = get_fixed_memory_packet_size (config); |
11cf8741 JM |
1987 | else |
1988 | { | |
ea9c271d | 1989 | what_they_get = get_remote_packet_size (); |
23860348 | 1990 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
1991 | if (config->size > 0 |
1992 | && what_they_get > config->size) | |
1993 | what_they_get = config->size; | |
be2a5f71 DJ |
1994 | |
1995 | /* Limit it to the size of the targets ``g'' response unless we have | |
1996 | permission from the stub to use a larger packet size. */ | |
1997 | if (rs->explicit_packet_size == 0 | |
1998 | && rsa->actual_register_packet_size > 0 | |
1999 | && what_they_get > rsa->actual_register_packet_size) | |
2000 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 | 2001 | } |
a5c0808e PA |
2002 | if (what_they_get < MIN_MEMORY_PACKET_SIZE) |
2003 | what_they_get = MIN_MEMORY_PACKET_SIZE; | |
6d820c5c DJ |
2004 | |
2005 | /* Make sure there is room in the global buffer for this packet | |
2006 | (including its trailing NUL byte). */ | |
8d64371b TT |
2007 | if (rs->buf.size () < what_they_get + 1) |
2008 | rs->buf.resize (2 * what_they_get); | |
6d820c5c | 2009 | |
11cf8741 JM |
2010 | return what_they_get; |
2011 | } | |
2012 | ||
0df8b418 | 2013 | /* Update the size of a read/write packet. If they user wants |
23860348 | 2014 | something really big then do a sanity check. */ |
11cf8741 JM |
2015 | |
2016 | static void | |
fe4c3ca0 CS |
2017 | set_memory_packet_size (const char *args, struct memory_packet_config *config, |
2018 | bool target_connected) | |
11cf8741 JM |
2019 | { |
2020 | int fixed_p = config->fixed_p; | |
2021 | long size = config->size; | |
a744cf53 | 2022 | |
11cf8741 | 2023 | if (args == NULL) |
fe4c3ca0 | 2024 | error (_("Argument required (integer, \"fixed\" or \"limit\").")); |
11cf8741 JM |
2025 | else if (strcmp (args, "hard") == 0 |
2026 | || strcmp (args, "fixed") == 0) | |
2027 | fixed_p = 1; | |
2028 | else if (strcmp (args, "soft") == 0 | |
2029 | || strcmp (args, "limit") == 0) | |
2030 | fixed_p = 0; | |
2031 | else | |
2032 | { | |
2033 | char *end; | |
a744cf53 | 2034 | |
11cf8741 JM |
2035 | size = strtoul (args, &end, 0); |
2036 | if (args == end) | |
8a3fe4f8 | 2037 | error (_("Invalid %s (bad syntax)."), config->name); |
a5c0808e PA |
2038 | |
2039 | /* Instead of explicitly capping the size of a packet to or | |
2040 | disallowing it, the user is allowed to set the size to | |
2041 | something arbitrarily large. */ | |
11cf8741 | 2042 | } |
a5c0808e | 2043 | |
23860348 | 2044 | /* Extra checks? */ |
11cf8741 JM |
2045 | if (fixed_p && !config->fixed_p) |
2046 | { | |
cc0be08f PA |
2047 | /* So that the query shows the correct value. */ |
2048 | long query_size = (size <= 0 | |
2049 | ? DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED | |
2050 | : size); | |
2051 | ||
fe4c3ca0 CS |
2052 | if (target_connected |
2053 | && !query (_("The target may not be able to correctly handle a %s\n" | |
2054 | "of %ld bytes. Change the packet size? "), | |
2055 | config->name, query_size)) | |
2056 | error (_("Packet size not changed.")); | |
2057 | else if (!target_connected | |
2058 | && !query (_("Future remote targets may not be able to " | |
2059 | "correctly handle a %s\nof %ld bytes. Change the " | |
2060 | "packet size for future remote targets? "), | |
2061 | config->name, query_size)) | |
8a3fe4f8 | 2062 | error (_("Packet size not changed.")); |
11cf8741 | 2063 | } |
23860348 | 2064 | /* Update the config. */ |
11cf8741 JM |
2065 | config->fixed_p = fixed_p; |
2066 | config->size = size; | |
fe4c3ca0 CS |
2067 | |
2068 | const char *target_type = get_target_type_name (target_connected); | |
2069 | gdb_printf (_("The %s %s is set to \"%s\".\n"), config->name, target_type, | |
2070 | args); | |
2071 | ||
11cf8741 JM |
2072 | } |
2073 | ||
fe4c3ca0 CS |
2074 | /* Show the memory-read or write-packet size configuration CONFIG of the |
2075 | target REMOTE. If REMOTE is nullptr, the default configuration for future | |
2076 | remote targets should be passed in CONFIG. */ | |
2077 | ||
11cf8741 | 2078 | static void |
fe4c3ca0 | 2079 | show_memory_packet_size (memory_packet_config *config, remote_target *remote) |
11cf8741 | 2080 | { |
fe4c3ca0 CS |
2081 | const char *target_type = get_target_type_name (remote != nullptr); |
2082 | ||
cc0be08f | 2083 | if (config->size == 0) |
fe4c3ca0 | 2084 | gdb_printf (_("The %s %s is 0 (default). "), config->name, target_type); |
cc0be08f | 2085 | else |
fe4c3ca0 CS |
2086 | gdb_printf (_("The %s %s is %ld. "), config->name, target_type, |
2087 | config->size); | |
2088 | ||
11cf8741 | 2089 | if (config->fixed_p) |
6cb06a8c TT |
2090 | gdb_printf (_("Packets are fixed at %ld bytes.\n"), |
2091 | get_fixed_memory_packet_size (config)); | |
11cf8741 | 2092 | else |
cc0be08f | 2093 | { |
fe4c3ca0 | 2094 | if (remote != nullptr) |
6cb06a8c TT |
2095 | gdb_printf (_("Packets are limited to %ld bytes.\n"), |
2096 | remote->get_memory_packet_size (config)); | |
cc0be08f | 2097 | else |
0426ad51 TT |
2098 | gdb_puts ("The actual limit will be further reduced " |
2099 | "dependent on the target.\n"); | |
cc0be08f | 2100 | } |
11cf8741 JM |
2101 | } |
2102 | ||
fe4c3ca0 CS |
2103 | /* Configure the memory-write-packet size of the currently selected target. If |
2104 | no target is available, the default configuration for future remote targets | |
2105 | is configured. */ | |
11cf8741 JM |
2106 | |
2107 | static void | |
ac88e2de | 2108 | set_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 | 2109 | { |
fe4c3ca0 CS |
2110 | remote_target *remote = get_current_remote_target (); |
2111 | if (remote != nullptr) | |
2112 | { | |
2113 | set_memory_packet_size | |
2114 | (args, &remote->m_features.m_memory_write_packet_config, true); | |
2115 | } | |
2116 | else | |
2117 | { | |
2118 | memory_packet_config* config = &memory_write_packet_config; | |
2119 | set_memory_packet_size (args, config, false); | |
2120 | } | |
11cf8741 JM |
2121 | } |
2122 | ||
fe4c3ca0 CS |
2123 | /* Display the memory-write-packet size of the currently selected target. If |
2124 | no target is available, the default configuration for future remote targets | |
2125 | is shown. */ | |
2126 | ||
11cf8741 | 2127 | static void |
ac88e2de | 2128 | show_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 | 2129 | { |
fe4c3ca0 CS |
2130 | remote_target *remote = get_current_remote_target (); |
2131 | if (remote != nullptr) | |
2132 | show_memory_packet_size (&remote->m_features.m_memory_write_packet_config, | |
2133 | remote); | |
2134 | else | |
2135 | show_memory_packet_size (&memory_write_packet_config, nullptr); | |
11cf8741 JM |
2136 | } |
2137 | ||
055303e2 AB |
2138 | /* Show the number of hardware watchpoints that can be used. */ |
2139 | ||
2140 | static void | |
2141 | show_hardware_watchpoint_limit (struct ui_file *file, int from_tty, | |
2142 | struct cmd_list_element *c, | |
2143 | const char *value) | |
2144 | { | |
6cb06a8c TT |
2145 | gdb_printf (file, _("The maximum number of target hardware " |
2146 | "watchpoints is %s.\n"), value); | |
055303e2 AB |
2147 | } |
2148 | ||
2149 | /* Show the length limit (in bytes) for hardware watchpoints. */ | |
2150 | ||
2151 | static void | |
2152 | show_hardware_watchpoint_length_limit (struct ui_file *file, int from_tty, | |
2153 | struct cmd_list_element *c, | |
2154 | const char *value) | |
2155 | { | |
6cb06a8c TT |
2156 | gdb_printf (file, _("The maximum length (in bytes) of a target " |
2157 | "hardware watchpoint is %s.\n"), value); | |
055303e2 AB |
2158 | } |
2159 | ||
2160 | /* Show the number of hardware breakpoints that can be used. */ | |
2161 | ||
2162 | static void | |
2163 | show_hardware_breakpoint_limit (struct ui_file *file, int from_tty, | |
2164 | struct cmd_list_element *c, | |
2165 | const char *value) | |
2166 | { | |
6cb06a8c TT |
2167 | gdb_printf (file, _("The maximum number of target hardware " |
2168 | "breakpoints is %s.\n"), value); | |
055303e2 AB |
2169 | } |
2170 | ||
6cc8564b LM |
2171 | /* Controls the maximum number of characters to display in the debug output |
2172 | for each remote packet. The remaining characters are omitted. */ | |
2173 | ||
2174 | static int remote_packet_max_chars = 512; | |
2175 | ||
2176 | /* Show the maximum number of characters to display for each remote packet | |
2177 | when remote debugging is enabled. */ | |
2178 | ||
2179 | static void | |
2180 | show_remote_packet_max_chars (struct ui_file *file, int from_tty, | |
2181 | struct cmd_list_element *c, | |
2182 | const char *value) | |
2183 | { | |
6cb06a8c TT |
2184 | gdb_printf (file, _("Number of remote packet characters to " |
2185 | "display is %s.\n"), value); | |
6cc8564b LM |
2186 | } |
2187 | ||
6b8edb51 PA |
2188 | long |
2189 | remote_target::get_memory_write_packet_size () | |
11cf8741 | 2190 | { |
fe4c3ca0 | 2191 | return get_memory_packet_size (&m_features.m_memory_write_packet_config); |
11cf8741 JM |
2192 | } |
2193 | ||
fe4c3ca0 CS |
2194 | /* Configure the memory-read-packet size of the currently selected target. If |
2195 | no target is available, the default configuration for future remote targets | |
2196 | is adapted. */ | |
11cf8741 JM |
2197 | |
2198 | static void | |
ac88e2de | 2199 | set_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 | 2200 | { |
fe4c3ca0 CS |
2201 | remote_target *remote = get_current_remote_target (); |
2202 | if (remote != nullptr) | |
2203 | set_memory_packet_size | |
2204 | (args, &remote->m_features.m_memory_read_packet_config, true); | |
2205 | else | |
2206 | { | |
2207 | memory_packet_config* config = &memory_read_packet_config; | |
2208 | set_memory_packet_size (args, config, false); | |
2209 | } | |
2210 | ||
11cf8741 JM |
2211 | } |
2212 | ||
fe4c3ca0 CS |
2213 | /* Display the memory-read-packet size of the currently selected target. If |
2214 | no target is available, the default configuration for future remote targets | |
2215 | is shown. */ | |
2216 | ||
11cf8741 | 2217 | static void |
ac88e2de | 2218 | show_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 | 2219 | { |
fe4c3ca0 CS |
2220 | remote_target *remote = get_current_remote_target (); |
2221 | if (remote != nullptr) | |
2222 | show_memory_packet_size (&remote->m_features.m_memory_read_packet_config, | |
2223 | remote); | |
2224 | else | |
2225 | show_memory_packet_size (&memory_read_packet_config, nullptr); | |
11cf8741 JM |
2226 | } |
2227 | ||
6b8edb51 PA |
2228 | long |
2229 | remote_target::get_memory_read_packet_size () | |
11cf8741 | 2230 | { |
fe4c3ca0 | 2231 | long size = get_memory_packet_size (&m_features.m_memory_read_packet_config); |
a744cf53 | 2232 | |
11cf8741 JM |
2233 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
2234 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
2235 | increased beyond this. */ |
2236 | if (size > get_remote_packet_size ()) | |
2237 | size = get_remote_packet_size (); | |
11cf8741 JM |
2238 | return size; |
2239 | } | |
2240 | ||
ff52c073 | 2241 | static enum packet_support packet_config_support (const packet_config *config); |
5a2468f5 | 2242 | |
4082afcc | 2243 | |
ff52c073 CS |
2244 | static void |
2245 | set_remote_protocol_packet_cmd (const char *args, int from_tty, | |
2246 | cmd_list_element *c) | |
2247 | { | |
2248 | remote_target *remote = get_current_remote_target (); | |
2249 | gdb_assert (c->var.has_value ()); | |
4082afcc | 2250 | |
ff52c073 CS |
2251 | auto *default_config = static_cast<packet_config *> (c->context ()); |
2252 | const int packet_idx = std::distance (remote_protocol_packets, | |
2253 | default_config); | |
fcef6471 | 2254 | |
ff52c073 CS |
2255 | if (packet_idx >= 0 && packet_idx < PACKET_MAX) |
2256 | { | |
2257 | const char *name = packets_descriptions[packet_idx].name; | |
2258 | const auto_boolean value = c->var->get<auto_boolean> (); | |
2259 | const char *support = get_packet_support_name (value); | |
2260 | const char *target_type = get_target_type_name (remote != nullptr); | |
5a2468f5 | 2261 | |
ff52c073 CS |
2262 | if (remote != nullptr) |
2263 | remote->m_features.m_protocol_packets[packet_idx].detect = value; | |
2264 | else | |
2265 | remote_protocol_packets[packet_idx].detect = value; | |
2266 | ||
2267 | gdb_printf (_("Support for the '%s' packet %s is set to \"%s\".\n"), name, | |
2268 | target_type, support); | |
2269 | return; | |
2270 | } | |
2271 | ||
2272 | internal_error (_("Could not find config for %s"), c->name); | |
2273 | } | |
5a2468f5 JM |
2274 | |
2275 | static void | |
ff52c073 CS |
2276 | show_packet_config_cmd (ui_file *file, const unsigned int which_packet, |
2277 | remote_target *remote) | |
5a2468f5 | 2278 | { |
a121b7c1 | 2279 | const char *support = "internal-error"; |
ff52c073 CS |
2280 | const char *target_type = get_target_type_name (remote != nullptr); |
2281 | ||
2282 | packet_config *config; | |
2283 | if (remote != nullptr) | |
2284 | config = &remote->m_features.m_protocol_packets[which_packet]; | |
2285 | else | |
2286 | config = &remote_protocol_packets[which_packet]; | |
a744cf53 | 2287 | |
4082afcc | 2288 | switch (packet_config_support (config)) |
5a2468f5 JM |
2289 | { |
2290 | case PACKET_ENABLE: | |
2291 | support = "enabled"; | |
2292 | break; | |
2293 | case PACKET_DISABLE: | |
2294 | support = "disabled"; | |
2295 | break; | |
2296 | case PACKET_SUPPORT_UNKNOWN: | |
2297 | support = "unknown"; | |
2298 | break; | |
2299 | } | |
2300 | switch (config->detect) | |
2301 | { | |
7f19b9a2 | 2302 | case AUTO_BOOLEAN_AUTO: |
6cb06a8c | 2303 | gdb_printf (file, |
ff52c073 CS |
2304 | _("Support for the '%s' packet %s is \"auto\", " |
2305 | "currently %s.\n"), | |
2306 | packets_descriptions[which_packet].name, target_type, | |
2307 | support); | |
5a2468f5 | 2308 | break; |
7f19b9a2 AC |
2309 | case AUTO_BOOLEAN_TRUE: |
2310 | case AUTO_BOOLEAN_FALSE: | |
6cb06a8c | 2311 | gdb_printf (file, |
ff52c073 CS |
2312 | _("Support for the '%s' packet %s is \"%s\".\n"), |
2313 | packets_descriptions[which_packet].name, target_type, | |
2314 | get_packet_support_name (config->detect)); | |
8e248173 | 2315 | break; |
5a2468f5 JM |
2316 | } |
2317 | } | |
2318 | ||
2319 | static void | |
ff52c073 | 2320 | add_packet_config_cmd (const unsigned int which_packet, const char *name, |
bb572ddd | 2321 | const char *title, int legacy) |
d471ea57 | 2322 | { |
ff52c073 CS |
2323 | packets_descriptions[which_packet].name = name; |
2324 | packets_descriptions[which_packet].title = title; | |
2325 | ||
2326 | packet_config *config = &remote_protocol_packets[which_packet]; | |
2327 | ||
8579fd13 AB |
2328 | gdb::unique_xmalloc_ptr<char> set_doc |
2329 | = xstrprintf ("Set use of remote protocol `%s' (%s) packet.", | |
2330 | name, title); | |
2331 | gdb::unique_xmalloc_ptr<char> show_doc | |
2332 | = xstrprintf ("Show current use of remote protocol `%s' (%s) packet.", | |
2333 | name, title); | |
d471ea57 | 2334 | /* set/show TITLE-packet {auto,on,off} */ |
8579fd13 | 2335 | gdb::unique_xmalloc_ptr<char> cmd_name = xstrprintf ("%s-packet", title); |
5e84b7ee | 2336 | set_show_commands cmds |
8579fd13 AB |
2337 | = add_setshow_auto_boolean_cmd (cmd_name.release (), class_obscure, |
2338 | &config->detect, set_doc.get (), | |
2339 | show_doc.get (), NULL, /* help_doc */ | |
ff52c073 | 2340 | set_remote_protocol_packet_cmd, |
5e84b7ee SM |
2341 | show_remote_protocol_packet_cmd, |
2342 | &remote_set_cmdlist, &remote_show_cmdlist); | |
ff52c073 CS |
2343 | cmds.show->set_context (config); |
2344 | cmds.set->set_context (config); | |
5e84b7ee | 2345 | |
23860348 | 2346 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
2347 | if (legacy) |
2348 | { | |
5f21c7aa AB |
2349 | /* It's not clear who should take ownership of the LEGACY_NAME string |
2350 | created below, so, for now, place the string into a static vector | |
2351 | which ensures the strings is released when GDB exits. */ | |
2352 | static std::vector<gdb::unique_xmalloc_ptr<char>> legacy_names; | |
2353 | gdb::unique_xmalloc_ptr<char> legacy_name | |
8579fd13 AB |
2354 | = xstrprintf ("%s-packet", name); |
2355 | add_alias_cmd (legacy_name.get (), cmds.set, class_obscure, 0, | |
bb572ddd | 2356 | &remote_set_cmdlist); |
8579fd13 | 2357 | add_alias_cmd (legacy_name.get (), cmds.show, class_obscure, 0, |
bb572ddd | 2358 | &remote_show_cmdlist); |
5f21c7aa | 2359 | legacy_names.emplace_back (std::move (legacy_name)); |
d471ea57 | 2360 | } |
5a2468f5 JM |
2361 | } |
2362 | ||
d471ea57 | 2363 | static enum packet_result |
a76d924d | 2364 | packet_check_result (const char *buf) |
5a2468f5 | 2365 | { |
d471ea57 | 2366 | if (buf[0] != '\0') |
5a2468f5 | 2367 | { |
d471ea57 | 2368 | /* The stub recognized the packet request. Check that the |
23860348 | 2369 | operation succeeded. */ |
a76d924d DJ |
2370 | if (buf[0] == 'E' |
2371 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
2372 | && buf[3] == '\0') | |
85102364 | 2373 | /* "Enn" - definitely an error. */ |
a76d924d DJ |
2374 | return PACKET_ERROR; |
2375 | ||
2376 | /* Always treat "E." as an error. This will be used for | |
2377 | more verbose error messages, such as E.memtypes. */ | |
2378 | if (buf[0] == 'E' && buf[1] == '.') | |
2379 | return PACKET_ERROR; | |
2380 | ||
2381 | /* The packet may or may not be OK. Just assume it is. */ | |
2382 | return PACKET_OK; | |
2383 | } | |
2384 | else | |
2385 | /* The stub does not support the packet. */ | |
2386 | return PACKET_UNKNOWN; | |
2387 | } | |
2388 | ||
8d64371b TT |
2389 | static enum packet_result |
2390 | packet_check_result (const gdb::char_vector &buf) | |
2391 | { | |
2392 | return packet_check_result (buf.data ()); | |
2393 | } | |
2394 | ||
ff52c073 CS |
2395 | packet_result |
2396 | remote_features::packet_ok (const char *buf, const int which_packet) | |
a76d924d | 2397 | { |
ff52c073 CS |
2398 | packet_config *config = &m_protocol_packets[which_packet]; |
2399 | packet_description *descr = &packets_descriptions[which_packet]; | |
2400 | ||
a76d924d DJ |
2401 | enum packet_result result; |
2402 | ||
4082afcc PA |
2403 | if (config->detect != AUTO_BOOLEAN_TRUE |
2404 | && config->support == PACKET_DISABLE) | |
f34652de | 2405 | internal_error (_("packet_ok: attempt to use a disabled packet")); |
4082afcc | 2406 | |
a76d924d DJ |
2407 | result = packet_check_result (buf); |
2408 | switch (result) | |
2409 | { | |
2410 | case PACKET_OK: | |
2411 | case PACKET_ERROR: | |
2412 | /* The stub recognized the packet request. */ | |
4082afcc | 2413 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 2414 | { |
2189c312 | 2415 | remote_debug_printf ("Packet %s (%s) is supported", |
ff52c073 | 2416 | descr->name, descr->title); |
d471ea57 | 2417 | config->support = PACKET_ENABLE; |
d471ea57 | 2418 | } |
a76d924d DJ |
2419 | break; |
2420 | case PACKET_UNKNOWN: | |
23860348 | 2421 | /* The stub does not support the packet. */ |
4082afcc PA |
2422 | if (config->detect == AUTO_BOOLEAN_AUTO |
2423 | && config->support == PACKET_ENABLE) | |
d471ea57 | 2424 | { |
4082afcc PA |
2425 | /* If the stub previously indicated that the packet was |
2426 | supported then there is a protocol error. */ | |
2427 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
ff52c073 | 2428 | descr->name, descr->title); |
4082afcc PA |
2429 | } |
2430 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
2431 | { | |
2432 | /* The user set it wrong. */ | |
2433 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
ff52c073 | 2434 | descr->name, descr->title); |
d471ea57 | 2435 | } |
4082afcc | 2436 | |
ff52c073 CS |
2437 | remote_debug_printf ("Packet %s (%s) is NOT supported", descr->name, |
2438 | descr->title); | |
4082afcc | 2439 | config->support = PACKET_DISABLE; |
a76d924d | 2440 | break; |
5a2468f5 | 2441 | } |
a76d924d DJ |
2442 | |
2443 | return result; | |
5a2468f5 JM |
2444 | } |
2445 | ||
ff52c073 CS |
2446 | packet_result |
2447 | remote_features::packet_ok (const gdb::char_vector &buf, const int which_packet) | |
f7e6eed5 | 2448 | { |
ff52c073 | 2449 | return packet_ok (buf.data (), which_packet); |
f7e6eed5 PA |
2450 | } |
2451 | ||
4082afcc PA |
2452 | /* Returns whether a given packet or feature is supported. This takes |
2453 | into account the state of the corresponding "set remote foo-packet" | |
2454 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 2455 | |
4082afcc | 2456 | static enum packet_support |
ff52c073 | 2457 | packet_config_support (const packet_config *config) |
4082afcc PA |
2458 | { |
2459 | switch (config->detect) | |
444abaca | 2460 | { |
4082afcc PA |
2461 | case AUTO_BOOLEAN_TRUE: |
2462 | return PACKET_ENABLE; | |
2463 | case AUTO_BOOLEAN_FALSE: | |
2464 | return PACKET_DISABLE; | |
2465 | case AUTO_BOOLEAN_AUTO: | |
2466 | return config->support; | |
2467 | default: | |
557b4d76 | 2468 | gdb_assert_not_reached ("bad switch"); |
444abaca | 2469 | } |
4082afcc PA |
2470 | } |
2471 | ||
ff52c073 CS |
2472 | packet_support |
2473 | remote_features::packet_support (int packet) const | |
4082afcc | 2474 | { |
ff52c073 | 2475 | const packet_config *config = &m_protocol_packets[packet]; |
4082afcc | 2476 | return packet_config_support (config); |
dc8acb97 MS |
2477 | } |
2478 | ||
5a2468f5 | 2479 | static void |
444abaca DJ |
2480 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
2481 | struct cmd_list_element *c, | |
2482 | const char *value) | |
5a2468f5 | 2483 | { |
ff52c073 | 2484 | remote_target *remote = get_current_remote_target (); |
1d7fe7f0 | 2485 | gdb_assert (c->var.has_value ()); |
5a2468f5 | 2486 | |
ff52c073 CS |
2487 | auto *default_config = static_cast<packet_config *> (c->context ()); |
2488 | const int packet_idx = std::distance (remote_protocol_packets, | |
2489 | default_config); | |
2490 | ||
2491 | if (packet_idx >= 0 && packet_idx < PACKET_MAX) | |
444abaca | 2492 | { |
ff52c073 CS |
2493 | show_packet_config_cmd (file, packet_idx, remote); |
2494 | return; | |
444abaca | 2495 | } |
ff52c073 | 2496 | internal_error (_("Could not find config for %s"), c->name); |
5a2468f5 JM |
2497 | } |
2498 | ||
d471ea57 AC |
2499 | /* Should we try one of the 'Z' requests? */ |
2500 | ||
2501 | enum Z_packet_type | |
2502 | { | |
2503 | Z_PACKET_SOFTWARE_BP, | |
2504 | Z_PACKET_HARDWARE_BP, | |
2505 | Z_PACKET_WRITE_WP, | |
2506 | Z_PACKET_READ_WP, | |
2507 | Z_PACKET_ACCESS_WP, | |
2508 | NR_Z_PACKET_TYPES | |
2509 | }; | |
96baa820 | 2510 | |
d471ea57 | 2511 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 2512 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 2513 | |
7f19b9a2 | 2514 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
2515 | |
2516 | static void | |
eb4c3f4a | 2517 | set_remote_protocol_Z_packet_cmd (const char *args, int from_tty, |
fba45db2 | 2518 | struct cmd_list_element *c) |
96baa820 | 2519 | { |
ff52c073 | 2520 | remote_target *remote = get_current_remote_target (); |
d471ea57 | 2521 | int i; |
a744cf53 | 2522 | |
d471ea57 | 2523 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
ff52c073 CS |
2524 | { |
2525 | if (remote != nullptr) | |
2526 | remote->m_features.m_protocol_packets[PACKET_Z0 + i].detect | |
2527 | = remote_Z_packet_detect; | |
2528 | else | |
2529 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; | |
2530 | } | |
2531 | ||
2532 | const char *support = get_packet_support_name (remote_Z_packet_detect); | |
2533 | const char *target_type = get_target_type_name (remote != nullptr); | |
2534 | gdb_printf (_("Use of Z packets %s is set to \"%s\".\n"), target_type, | |
2535 | support); | |
2536 | ||
96baa820 JM |
2537 | } |
2538 | ||
2539 | static void | |
08546159 AC |
2540 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
2541 | struct cmd_list_element *c, | |
2542 | const char *value) | |
96baa820 | 2543 | { |
ff52c073 | 2544 | remote_target *remote = get_current_remote_target (); |
d471ea57 | 2545 | int i; |
a744cf53 | 2546 | |
d471ea57 | 2547 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
ff52c073 | 2548 | show_packet_config_cmd (file, PACKET_Z0 + i, remote); |
2c2e7f87 LM |
2549 | } |
2550 | ||
cbb8991c DB |
2551 | /* Insert fork catchpoint target routine. If fork events are enabled |
2552 | then return success, nothing more to do. */ | |
2553 | ||
f6ac5f3d PA |
2554 | int |
2555 | remote_target::insert_fork_catchpoint (int pid) | |
cbb8991c | 2556 | { |
ff52c073 | 2557 | return !m_features.remote_fork_event_p (); |
cbb8991c DB |
2558 | } |
2559 | ||
2560 | /* Remove fork catchpoint target routine. Nothing to do, just | |
2561 | return success. */ | |
2562 | ||
f6ac5f3d PA |
2563 | int |
2564 | remote_target::remove_fork_catchpoint (int pid) | |
cbb8991c DB |
2565 | { |
2566 | return 0; | |
2567 | } | |
2568 | ||
2569 | /* Insert vfork catchpoint target routine. If vfork events are enabled | |
2570 | then return success, nothing more to do. */ | |
2571 | ||
f6ac5f3d PA |
2572 | int |
2573 | remote_target::insert_vfork_catchpoint (int pid) | |
cbb8991c | 2574 | { |
ff52c073 | 2575 | return !m_features.remote_vfork_event_p (); |
cbb8991c DB |
2576 | } |
2577 | ||
2578 | /* Remove vfork catchpoint target routine. Nothing to do, just | |
2579 | return success. */ | |
2580 | ||
f6ac5f3d PA |
2581 | int |
2582 | remote_target::remove_vfork_catchpoint (int pid) | |
cbb8991c DB |
2583 | { |
2584 | return 0; | |
2585 | } | |
2586 | ||
d46addbb DB |
2587 | /* Insert exec catchpoint target routine. If exec events are |
2588 | enabled, just return success. */ | |
2589 | ||
f6ac5f3d PA |
2590 | int |
2591 | remote_target::insert_exec_catchpoint (int pid) | |
d46addbb | 2592 | { |
ff52c073 | 2593 | return !m_features.remote_exec_event_p (); |
d46addbb DB |
2594 | } |
2595 | ||
2596 | /* Remove exec catchpoint target routine. Nothing to do, just | |
2597 | return success. */ | |
2598 | ||
f6ac5f3d PA |
2599 | int |
2600 | remote_target::remove_exec_catchpoint (int pid) | |
d46addbb DB |
2601 | { |
2602 | return 0; | |
2603 | } | |
2604 | ||
c906108c SS |
2605 | \f |
2606 | ||
ffdd69cf TT |
2607 | /* Take advantage of the fact that the TID field is not used, to tag |
2608 | special ptids with it set to != 0. */ | |
2609 | static const ptid_t magic_null_ptid (42000, -1, 1); | |
2610 | static const ptid_t not_sent_ptid (42000, -2, 1); | |
2611 | static const ptid_t any_thread_ptid (42000, 0, 1); | |
79d7f229 | 2612 | |
0b16c5cf PA |
2613 | /* Find out if the stub attached to PID (and hence GDB should offer to |
2614 | detach instead of killing it when bailing out). */ | |
2615 | ||
6b8edb51 PA |
2616 | int |
2617 | remote_target::remote_query_attached (int pid) | |
0b16c5cf PA |
2618 | { |
2619 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 2620 | size_t size = get_remote_packet_size (); |
0b16c5cf | 2621 | |
ff52c073 | 2622 | if (m_features.packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
2623 | return 0; |
2624 | ||
ff52c073 | 2625 | if (m_features.remote_multi_process_p ()) |
8d64371b | 2626 | xsnprintf (rs->buf.data (), size, "qAttached:%x", pid); |
0b16c5cf | 2627 | else |
8d64371b | 2628 | xsnprintf (rs->buf.data (), size, "qAttached"); |
0b16c5cf PA |
2629 | |
2630 | putpkt (rs->buf); | |
8d64371b | 2631 | getpkt (&rs->buf, 0); |
0b16c5cf | 2632 | |
ff52c073 | 2633 | switch (m_features.packet_ok (rs->buf, PACKET_qAttached)) |
0b16c5cf PA |
2634 | { |
2635 | case PACKET_OK: | |
8d64371b | 2636 | if (strcmp (rs->buf.data (), "1") == 0) |
0b16c5cf PA |
2637 | return 1; |
2638 | break; | |
2639 | case PACKET_ERROR: | |
8d64371b | 2640 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
0b16c5cf PA |
2641 | break; |
2642 | case PACKET_UNKNOWN: | |
2643 | break; | |
2644 | } | |
2645 | ||
2646 | return 0; | |
2647 | } | |
2648 | ||
49c62f2e PA |
2649 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
2650 | has been invented by GDB, instead of reported by the target. Since | |
2651 | we can be connected to a remote system before before knowing about | |
2652 | any inferior, mark the target with execution when we find the first | |
2653 | inferior. If ATTACHED is 1, then we had just attached to this | |
2654 | inferior. If it is 0, then we just created this inferior. If it | |
2655 | is -1, then try querying the remote stub to find out if it had | |
1b6e6f5c GB |
2656 | attached to the inferior or not. If TRY_OPEN_EXEC is true then |
2657 | attempt to open this inferior's executable as the main executable | |
2658 | if no main executable is open already. */ | |
1941c569 | 2659 | |
6b8edb51 | 2660 | inferior * |
9ab8741a | 2661 | remote_target::remote_add_inferior (bool fake_pid_p, int pid, int attached, |
6b8edb51 | 2662 | int try_open_exec) |
1941c569 | 2663 | { |
1941c569 PA |
2664 | struct inferior *inf; |
2665 | ||
0b16c5cf PA |
2666 | /* Check whether this process we're learning about is to be |
2667 | considered attached, or if is to be considered to have been | |
2668 | spawned by the stub. */ | |
2669 | if (attached == -1) | |
2670 | attached = remote_query_attached (pid); | |
2671 | ||
f5656ead | 2672 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
2673 | { |
2674 | /* If the target shares code across all inferiors, then every | |
2675 | attach adds a new inferior. */ | |
2676 | inf = add_inferior (pid); | |
2677 | ||
2678 | /* ... and every inferior is bound to the same program space. | |
2679 | However, each inferior may still have its own address | |
2680 | space. */ | |
2681 | inf->aspace = maybe_new_address_space (); | |
2682 | inf->pspace = current_program_space; | |
2683 | } | |
2684 | else | |
2685 | { | |
2686 | /* In the traditional debugging scenario, there's a 1-1 match | |
2687 | between program/address spaces. We simply bind the inferior | |
2688 | to the program space's address space. */ | |
2689 | inf = current_inferior (); | |
78f2c40a PA |
2690 | |
2691 | /* However, if the current inferior is already bound to a | |
2692 | process, find some other empty inferior. */ | |
2693 | if (inf->pid != 0) | |
2694 | { | |
2695 | inf = nullptr; | |
2696 | for (inferior *it : all_inferiors ()) | |
2697 | if (it->pid == 0) | |
2698 | { | |
2699 | inf = it; | |
2700 | break; | |
2701 | } | |
2702 | } | |
2703 | if (inf == nullptr) | |
2704 | { | |
2705 | /* Since all inferiors were already bound to a process, add | |
2706 | a new inferior. */ | |
2707 | inf = add_inferior_with_spaces (); | |
2708 | } | |
2709 | switch_to_inferior_no_thread (inf); | |
02980c56 | 2710 | inf->push_target (this); |
6c95b8df PA |
2711 | inferior_appeared (inf, pid); |
2712 | } | |
1941c569 | 2713 | |
0b16c5cf | 2714 | inf->attach_flag = attached; |
49c62f2e | 2715 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 2716 | |
1b6e6f5c GB |
2717 | /* If no main executable is currently open then attempt to |
2718 | open the file that was executed to create this inferior. */ | |
835205d0 | 2719 | if (try_open_exec && get_exec_file (0) == NULL) |
bb805577 | 2720 | exec_file_locate_attach (pid, 0, 1); |
1b6e6f5c | 2721 | |
a2fedca9 PW |
2722 | /* Check for exec file mismatch, and let the user solve it. */ |
2723 | validate_exec_file (1); | |
2724 | ||
1941c569 PA |
2725 | return inf; |
2726 | } | |
2727 | ||
7aabaf9d | 2728 | static remote_thread_info *get_remote_thread_info (thread_info *thread); |
5b6d1e4f PA |
2729 | static remote_thread_info *get_remote_thread_info (remote_target *target, |
2730 | ptid_t ptid); | |
85ad3aaf | 2731 | |
1941c569 | 2732 | /* Add thread PTID to GDB's thread list. Tag it as executing/running |
b622494e AB |
2733 | according to EXECUTING and RUNNING respectively. If SILENT_P (or the |
2734 | remote_state::starting_up flag) is true then the new thread is added | |
2735 | silently, otherwise the new thread will be announced to the user. */ | |
1941c569 | 2736 | |
00431a78 | 2737 | thread_info * |
b622494e AB |
2738 | remote_target::remote_add_thread (ptid_t ptid, bool running, bool executing, |
2739 | bool silent_p) | |
c906108c | 2740 | { |
b7ea362b | 2741 | struct remote_state *rs = get_remote_state (); |
85ad3aaf | 2742 | struct thread_info *thread; |
b7ea362b PA |
2743 | |
2744 | /* GDB historically didn't pull threads in the initial connection | |
2745 | setup. If the remote target doesn't even have a concept of | |
2746 | threads (e.g., a bare-metal target), even if internally we | |
2747 | consider that a single-threaded target, mentioning a new thread | |
2748 | might be confusing to the user. Be silent then, preserving the | |
2749 | age old behavior. */ | |
b622494e | 2750 | if (rs->starting_up || silent_p) |
5b6d1e4f | 2751 | thread = add_thread_silent (this, ptid); |
b7ea362b | 2752 | else |
5b6d1e4f | 2753 | thread = add_thread (this, ptid); |
1941c569 | 2754 | |
c9d22089 SM |
2755 | /* We start by assuming threads are resumed. That state then gets updated |
2756 | when we process a matching stop reply. */ | |
2757 | get_remote_thread_info (thread)->set_resumed (); | |
2758 | ||
5b6d1e4f PA |
2759 | set_executing (this, ptid, executing); |
2760 | set_running (this, ptid, running); | |
00431a78 PA |
2761 | |
2762 | return thread; | |
1941c569 PA |
2763 | } |
2764 | ||
2765 | /* Come here when we learn about a thread id from the remote target. | |
2766 | It may be the first time we hear about such thread, so take the | |
2767 | opportunity to add it to GDB's thread list. In case this is the | |
2768 | first time we're noticing its corresponding inferior, add it to | |
0d5b594f PA |
2769 | GDB's inferior list as well. EXECUTING indicates whether the |
2770 | thread is (internally) executing or stopped. */ | |
1941c569 | 2771 | |
6b8edb51 | 2772 | void |
8a82de58 | 2773 | remote_target::remote_notice_new_inferior (ptid_t currthread, bool executing) |
1941c569 | 2774 | { |
0d5b594f PA |
2775 | /* In non-stop mode, we assume new found threads are (externally) |
2776 | running until proven otherwise with a stop reply. In all-stop, | |
2777 | we can only get here if all threads are stopped. */ | |
8a82de58 | 2778 | bool running = target_is_non_stop_p (); |
0d5b594f | 2779 | |
c906108c SS |
2780 | /* If this is a new thread, add it to GDB's thread list. |
2781 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 | 2782 | |
9213a6d7 | 2783 | thread_info *tp = this->find_thread (currthread); |
00431a78 | 2784 | if (tp != NULL && tp->state == THREAD_EXITED) |
82f73884 PA |
2785 | { |
2786 | /* We're seeing an event on a thread id we knew had exited. | |
2787 | This has to be a new thread reusing the old id. Add it. */ | |
b622494e | 2788 | remote_add_thread (currthread, running, executing, false); |
82f73884 PA |
2789 | return; |
2790 | } | |
2791 | ||
5b6d1e4f | 2792 | if (!in_thread_list (this, currthread)) |
c0a2216e | 2793 | { |
1941c569 | 2794 | struct inferior *inf = NULL; |
e99b03dc | 2795 | int pid = currthread.pid (); |
1941c569 | 2796 | |
0e998d96 | 2797 | if (inferior_ptid.is_pid () |
e99b03dc | 2798 | && pid == inferior_ptid.pid ()) |
c0a2216e PA |
2799 | { |
2800 | /* inferior_ptid has no thread member yet. This can happen | |
2801 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
2802 | stub doesn't support qC. This is the first stop reported | |
2803 | after an attach, so this is the main thread. Update the | |
2804 | ptid in the thread list. */ | |
5b6d1e4f PA |
2805 | if (in_thread_list (this, ptid_t (pid))) |
2806 | thread_change_ptid (this, inferior_ptid, currthread); | |
bad34192 PA |
2807 | else |
2808 | { | |
0ac55310 | 2809 | thread_info *thr |
b622494e | 2810 | = remote_add_thread (currthread, running, executing, false); |
0ac55310 | 2811 | switch_to_thread (thr); |
bad34192 | 2812 | } |
dc146f7c | 2813 | return; |
c0a2216e | 2814 | } |
82f73884 | 2815 | |
d7e15655 | 2816 | if (magic_null_ptid == inferior_ptid) |
c0a2216e PA |
2817 | { |
2818 | /* inferior_ptid is not set yet. This can happen with the | |
2819 | vRun -> remote_wait,"TAAthread:" path if the stub | |
2820 | doesn't support qC. This is the first stop reported | |
2821 | after an attach, so this is the main thread. Update the | |
2822 | ptid in the thread list. */ | |
5b6d1e4f | 2823 | thread_change_ptid (this, inferior_ptid, currthread); |
82f73884 | 2824 | return; |
c0a2216e | 2825 | } |
82f73884 | 2826 | |
29c87f7f PA |
2827 | /* When connecting to a target remote, or to a target |
2828 | extended-remote which already was debugging an inferior, we | |
2829 | may not know about it yet. Add it before adding its child | |
2830 | thread, so notifications are emitted in a sensible order. */ | |
5b6d1e4f | 2831 | if (find_inferior_pid (this, currthread.pid ()) == NULL) |
49c62f2e | 2832 | { |
ff52c073 | 2833 | bool fake_pid_p = !m_features.remote_multi_process_p (); |
49c62f2e PA |
2834 | |
2835 | inf = remote_add_inferior (fake_pid_p, | |
e99b03dc | 2836 | currthread.pid (), -1, 1); |
49c62f2e | 2837 | } |
29c87f7f | 2838 | |
82f73884 | 2839 | /* This is really a new thread. Add it. */ |
00431a78 | 2840 | thread_info *new_thr |
b622494e | 2841 | = remote_add_thread (currthread, running, executing, false); |
1941c569 PA |
2842 | |
2843 | /* If we found a new inferior, let the common code do whatever | |
2844 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
2845 | breakpoints), unless we're just setting up an all-stop |
2846 | connection. */ | |
1941c569 | 2847 | if (inf != NULL) |
b7ea362b PA |
2848 | { |
2849 | struct remote_state *rs = get_remote_state (); | |
2850 | ||
6efcd9a8 | 2851 | if (!rs->starting_up) |
00431a78 | 2852 | notice_new_inferior (new_thr, executing, 0); |
b7ea362b | 2853 | } |
c0a2216e | 2854 | } |
c906108c SS |
2855 | } |
2856 | ||
85ad3aaf | 2857 | /* Return THREAD's private thread data, creating it if necessary. */ |
dc146f7c | 2858 | |
7aabaf9d SM |
2859 | static remote_thread_info * |
2860 | get_remote_thread_info (thread_info *thread) | |
dc146f7c | 2861 | { |
85ad3aaf | 2862 | gdb_assert (thread != NULL); |
dc146f7c | 2863 | |
85ad3aaf | 2864 | if (thread->priv == NULL) |
7aabaf9d | 2865 | thread->priv.reset (new remote_thread_info); |
dc146f7c | 2866 | |
98ed24fb | 2867 | return gdb::checked_static_cast<remote_thread_info *> (thread->priv.get ()); |
85ad3aaf PA |
2868 | } |
2869 | ||
5b6d1e4f PA |
2870 | /* Return PTID's private thread data, creating it if necessary. */ |
2871 | ||
7aabaf9d | 2872 | static remote_thread_info * |
5b6d1e4f | 2873 | get_remote_thread_info (remote_target *target, ptid_t ptid) |
85ad3aaf | 2874 | { |
9213a6d7 | 2875 | thread_info *thr = target->find_thread (ptid); |
00431a78 | 2876 | return get_remote_thread_info (thr); |
dc146f7c VP |
2877 | } |
2878 | ||
74531fed PA |
2879 | /* Call this function as a result of |
2880 | 1) A halt indication (T packet) containing a thread id | |
2881 | 2) A direct query of currthread | |
0df8b418 | 2882 | 3) Successful execution of set thread */ |
74531fed PA |
2883 | |
2884 | static void | |
47f8a51d | 2885 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 2886 | { |
47f8a51d | 2887 | rs->general_thread = currthread; |
74531fed PA |
2888 | } |
2889 | ||
89be2091 DJ |
2890 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
2891 | it can simply pass through to the inferior without reporting. */ | |
2892 | ||
f6ac5f3d | 2893 | void |
adc6a863 | 2894 | remote_target::pass_signals (gdb::array_view<const unsigned char> pass_signals) |
89be2091 | 2895 | { |
ff52c073 | 2896 | if (m_features.packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
2897 | { |
2898 | char *pass_packet, *p; | |
adc6a863 | 2899 | int count = 0; |
747dc59d | 2900 | struct remote_state *rs = get_remote_state (); |
89be2091 | 2901 | |
adc6a863 PA |
2902 | gdb_assert (pass_signals.size () < 256); |
2903 | for (size_t i = 0; i < pass_signals.size (); i++) | |
89be2091 | 2904 | { |
2455069d | 2905 | if (pass_signals[i]) |
89be2091 DJ |
2906 | count++; |
2907 | } | |
224c3ddb | 2908 | pass_packet = (char *) xmalloc (count * 3 + strlen ("QPassSignals:") + 1); |
89be2091 DJ |
2909 | strcpy (pass_packet, "QPassSignals:"); |
2910 | p = pass_packet + strlen (pass_packet); | |
adc6a863 | 2911 | for (size_t i = 0; i < pass_signals.size (); i++) |
89be2091 | 2912 | { |
2455069d | 2913 | if (pass_signals[i]) |
89be2091 DJ |
2914 | { |
2915 | if (i >= 16) | |
2916 | *p++ = tohex (i >> 4); | |
2917 | *p++ = tohex (i & 15); | |
2918 | if (count) | |
2919 | *p++ = ';'; | |
2920 | else | |
2921 | break; | |
2922 | count--; | |
2923 | } | |
2924 | } | |
2925 | *p = 0; | |
747dc59d | 2926 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 2927 | { |
89be2091 | 2928 | putpkt (pass_packet); |
8d64371b | 2929 | getpkt (&rs->buf, 0); |
ff52c073 | 2930 | m_features.packet_ok (rs->buf, PACKET_QPassSignals); |
84d53fa9 | 2931 | xfree (rs->last_pass_packet); |
747dc59d | 2932 | rs->last_pass_packet = pass_packet; |
89be2091 DJ |
2933 | } |
2934 | else | |
2935 | xfree (pass_packet); | |
2936 | } | |
2937 | } | |
2938 | ||
82075af2 JS |
2939 | /* If 'QCatchSyscalls' is supported, tell the remote stub |
2940 | to report syscalls to GDB. */ | |
2941 | ||
f6ac5f3d PA |
2942 | int |
2943 | remote_target::set_syscall_catchpoint (int pid, bool needed, int any_count, | |
2944 | gdb::array_view<const int> syscall_counts) | |
82075af2 | 2945 | { |
b80406ac | 2946 | const char *catch_packet; |
82075af2 JS |
2947 | enum packet_result result; |
2948 | int n_sysno = 0; | |
2949 | ||
ff52c073 | 2950 | if (m_features.packet_support (PACKET_QCatchSyscalls) == PACKET_DISABLE) |
82075af2 JS |
2951 | { |
2952 | /* Not supported. */ | |
2953 | return 1; | |
2954 | } | |
2955 | ||
649a140c | 2956 | if (needed && any_count == 0) |
82075af2 | 2957 | { |
649a140c PA |
2958 | /* Count how many syscalls are to be caught. */ |
2959 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2960 | { |
649a140c | 2961 | if (syscall_counts[i] != 0) |
82075af2 JS |
2962 | n_sysno++; |
2963 | } | |
2964 | } | |
2965 | ||
2189c312 SM |
2966 | remote_debug_printf ("pid %d needed %d any_count %d n_sysno %d", |
2967 | pid, needed, any_count, n_sysno); | |
82075af2 | 2968 | |
1b81856f | 2969 | std::string built_packet; |
82075af2 JS |
2970 | if (needed) |
2971 | { | |
2972 | /* Prepare a packet with the sysno list, assuming max 8+1 | |
2973 | characters for a sysno. If the resulting packet size is too | |
2974 | big, fallback on the non-selective packet. */ | |
2975 | const int maxpktsz = strlen ("QCatchSyscalls:1") + n_sysno * 9 + 1; | |
1b81856f PA |
2976 | built_packet.reserve (maxpktsz); |
2977 | built_packet = "QCatchSyscalls:1"; | |
649a140c | 2978 | if (any_count == 0) |
82075af2 | 2979 | { |
649a140c PA |
2980 | /* Add in each syscall to be caught. */ |
2981 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2982 | { |
649a140c PA |
2983 | if (syscall_counts[i] != 0) |
2984 | string_appendf (built_packet, ";%zx", i); | |
82075af2 JS |
2985 | } |
2986 | } | |
1b81856f | 2987 | if (built_packet.size () > get_remote_packet_size ()) |
82075af2 JS |
2988 | { |
2989 | /* catch_packet too big. Fallback to less efficient | |
2990 | non selective mode, with GDB doing the filtering. */ | |
b80406ac | 2991 | catch_packet = "QCatchSyscalls:1"; |
82075af2 | 2992 | } |
b80406ac | 2993 | else |
1b81856f | 2994 | catch_packet = built_packet.c_str (); |
82075af2 JS |
2995 | } |
2996 | else | |
b80406ac | 2997 | catch_packet = "QCatchSyscalls:0"; |
82075af2 | 2998 | |
b80406ac | 2999 | struct remote_state *rs = get_remote_state (); |
82075af2 | 3000 | |
b80406ac | 3001 | putpkt (catch_packet); |
8d64371b | 3002 | getpkt (&rs->buf, 0); |
ff52c073 | 3003 | result = m_features.packet_ok (rs->buf, PACKET_QCatchSyscalls); |
b80406ac TT |
3004 | if (result == PACKET_OK) |
3005 | return 0; | |
3006 | else | |
3007 | return -1; | |
82075af2 JS |
3008 | } |
3009 | ||
9b224c5e PA |
3010 | /* If 'QProgramSignals' is supported, tell the remote stub what |
3011 | signals it should pass through to the inferior when detaching. */ | |
3012 | ||
f6ac5f3d | 3013 | void |
adc6a863 | 3014 | remote_target::program_signals (gdb::array_view<const unsigned char> signals) |
9b224c5e | 3015 | { |
ff52c073 | 3016 | if (m_features.packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
3017 | { |
3018 | char *packet, *p; | |
adc6a863 | 3019 | int count = 0; |
5e4a05c4 | 3020 | struct remote_state *rs = get_remote_state (); |
9b224c5e | 3021 | |
adc6a863 PA |
3022 | gdb_assert (signals.size () < 256); |
3023 | for (size_t i = 0; i < signals.size (); i++) | |
9b224c5e PA |
3024 | { |
3025 | if (signals[i]) | |
3026 | count++; | |
3027 | } | |
224c3ddb | 3028 | packet = (char *) xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); |
9b224c5e PA |
3029 | strcpy (packet, "QProgramSignals:"); |
3030 | p = packet + strlen (packet); | |
adc6a863 | 3031 | for (size_t i = 0; i < signals.size (); i++) |
9b224c5e PA |
3032 | { |
3033 | if (signal_pass_state (i)) | |
3034 | { | |
3035 | if (i >= 16) | |
3036 | *p++ = tohex (i >> 4); | |
3037 | *p++ = tohex (i & 15); | |
3038 | if (count) | |
3039 | *p++ = ';'; | |
3040 | else | |
3041 | break; | |
3042 | count--; | |
3043 | } | |
3044 | } | |
3045 | *p = 0; | |
5e4a05c4 TT |
3046 | if (!rs->last_program_signals_packet |
3047 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 3048 | { |
9b224c5e | 3049 | putpkt (packet); |
8d64371b | 3050 | getpkt (&rs->buf, 0); |
ff52c073 | 3051 | m_features.packet_ok (rs->buf, PACKET_QProgramSignals); |
5e4a05c4 TT |
3052 | xfree (rs->last_program_signals_packet); |
3053 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
3054 | } |
3055 | else | |
3056 | xfree (packet); | |
3057 | } | |
3058 | } | |
3059 | ||
79d7f229 PA |
3060 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
3061 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
3062 | thread. If GEN is set, set the general thread, if not, then set | |
3063 | the step/continue thread. */ | |
6b8edb51 PA |
3064 | void |
3065 | remote_target::set_thread (ptid_t ptid, int gen) | |
c906108c | 3066 | { |
d01949b6 | 3067 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 3068 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
8d64371b TT |
3069 | char *buf = rs->buf.data (); |
3070 | char *endbuf = buf + get_remote_packet_size (); | |
c906108c | 3071 | |
d7e15655 | 3072 | if (state == ptid) |
c906108c SS |
3073 | return; |
3074 | ||
79d7f229 PA |
3075 | *buf++ = 'H'; |
3076 | *buf++ = gen ? 'g' : 'c'; | |
d7e15655 | 3077 | if (ptid == magic_null_ptid) |
79d7f229 | 3078 | xsnprintf (buf, endbuf - buf, "0"); |
d7e15655 | 3079 | else if (ptid == any_thread_ptid) |
79d7f229 | 3080 | xsnprintf (buf, endbuf - buf, "0"); |
d7e15655 | 3081 | else if (ptid == minus_one_ptid) |
79d7f229 PA |
3082 | xsnprintf (buf, endbuf - buf, "-1"); |
3083 | else | |
82f73884 | 3084 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 3085 | putpkt (rs->buf); |
8d64371b | 3086 | getpkt (&rs->buf, 0); |
c906108c | 3087 | if (gen) |
47f8a51d | 3088 | rs->general_thread = ptid; |
c906108c | 3089 | else |
47f8a51d | 3090 | rs->continue_thread = ptid; |
c906108c | 3091 | } |
79d7f229 | 3092 | |
6b8edb51 PA |
3093 | void |
3094 | remote_target::set_general_thread (ptid_t ptid) | |
79d7f229 PA |
3095 | { |
3096 | set_thread (ptid, 1); | |
3097 | } | |
3098 | ||
6b8edb51 PA |
3099 | void |
3100 | remote_target::set_continue_thread (ptid_t ptid) | |
79d7f229 PA |
3101 | { |
3102 | set_thread (ptid, 0); | |
3103 | } | |
3104 | ||
3c9c4b83 PA |
3105 | /* Change the remote current process. Which thread within the process |
3106 | ends up selected isn't important, as long as it is the same process | |
3107 | as what INFERIOR_PTID points to. | |
3108 | ||
3109 | This comes from that fact that there is no explicit notion of | |
3110 | "selected process" in the protocol. The selected process for | |
3111 | general operations is the process the selected general thread | |
3112 | belongs to. */ | |
3113 | ||
6b8edb51 PA |
3114 | void |
3115 | remote_target::set_general_process () | |
3c9c4b83 | 3116 | { |
3c9c4b83 | 3117 | /* If the remote can't handle multiple processes, don't bother. */ |
ff52c073 | 3118 | if (!m_features.remote_multi_process_p ()) |
3c9c4b83 PA |
3119 | return; |
3120 | ||
ff52c073 CS |
3121 | remote_state *rs = get_remote_state (); |
3122 | ||
3c9c4b83 PA |
3123 | /* We only need to change the remote current thread if it's pointing |
3124 | at some other process. */ | |
e99b03dc | 3125 | if (rs->general_thread.pid () != inferior_ptid.pid ()) |
3c9c4b83 PA |
3126 | set_general_thread (inferior_ptid); |
3127 | } | |
3128 | ||
c906108c | 3129 | \f |
7d1a114c PA |
3130 | /* Return nonzero if this is the main thread that we made up ourselves |
3131 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
3132 | |
3133 | static int | |
f6ac5f3d | 3134 | remote_thread_always_alive (ptid_t ptid) |
c906108c | 3135 | { |
d7e15655 | 3136 | if (ptid == magic_null_ptid) |
c0a2216e PA |
3137 | /* The main thread is always alive. */ |
3138 | return 1; | |
3139 | ||
e38504b3 | 3140 | if (ptid.pid () != 0 && ptid.lwp () == 0) |
c0a2216e PA |
3141 | /* The main thread is always alive. This can happen after a |
3142 | vAttach, if the remote side doesn't support | |
3143 | multi-threading. */ | |
3144 | return 1; | |
3145 | ||
7d1a114c PA |
3146 | return 0; |
3147 | } | |
3148 | ||
3149 | /* Return nonzero if the thread PTID is still alive on the remote | |
3150 | system. */ | |
3151 | ||
57810aa7 | 3152 | bool |
f6ac5f3d | 3153 | remote_target::thread_alive (ptid_t ptid) |
7d1a114c PA |
3154 | { |
3155 | struct remote_state *rs = get_remote_state (); | |
3156 | char *p, *endp; | |
3157 | ||
3158 | /* Check if this is a thread that we made up ourselves to model | |
3159 | non-threaded targets as single-threaded. */ | |
f6ac5f3d | 3160 | if (remote_thread_always_alive (ptid)) |
7d1a114c PA |
3161 | return 1; |
3162 | ||
8d64371b TT |
3163 | p = rs->buf.data (); |
3164 | endp = p + get_remote_packet_size (); | |
82f73884 PA |
3165 | |
3166 | *p++ = 'T'; | |
3167 | write_ptid (p, endp, ptid); | |
3168 | ||
2e9f7625 | 3169 | putpkt (rs->buf); |
8d64371b | 3170 | getpkt (&rs->buf, 0); |
2e9f7625 | 3171 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
3172 | } |
3173 | ||
79efa585 SM |
3174 | /* Return a pointer to a thread name if we know it and NULL otherwise. |
3175 | The thread_info object owns the memory for the name. */ | |
3176 | ||
f6ac5f3d PA |
3177 | const char * |
3178 | remote_target::thread_name (struct thread_info *info) | |
79efa585 SM |
3179 | { |
3180 | if (info->priv != NULL) | |
a9334058 SM |
3181 | { |
3182 | const std::string &name = get_remote_thread_info (info)->name; | |
3183 | return !name.empty () ? name.c_str () : NULL; | |
3184 | } | |
79efa585 SM |
3185 | |
3186 | return NULL; | |
3187 | } | |
3188 | ||
c906108c SS |
3189 | /* About these extended threadlist and threadinfo packets. They are |
3190 | variable length packets but, the fields within them are often fixed | |
30baf67b | 3191 | length. They are redundant enough to send over UDP as is the |
c906108c SS |
3192 | remote protocol in general. There is a matching unit test module |
3193 | in libstub. */ | |
3194 | ||
23860348 | 3195 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 3196 | libstub protocol encoding, and remote.c. It is not particularly |
33b5899f | 3197 | changeable. */ |
cce74817 JM |
3198 | |
3199 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 3200 | Plan to fix this. */ |
cce74817 | 3201 | |
23860348 | 3202 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 3203 | |
9d1f7ab2 | 3204 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 3205 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
3206 | |
3207 | struct gdb_ext_thread_info | |
c5aa993b | 3208 | { |
23860348 | 3209 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 3210 | int active; /* Has state interesting to GDB? |
23860348 | 3211 | regs, stack. */ |
2bc416ba | 3212 | char display[256]; /* Brief state display, name, |
cedea757 | 3213 | blocked/suspended. */ |
23860348 | 3214 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 3215 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 3216 | whatever. */ |
c5aa993b | 3217 | }; |
cce74817 JM |
3218 | |
3219 | /* The volume of remote transfers can be limited by submitting | |
3220 | a mask containing bits specifying the desired information. | |
3221 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 3222 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
3223 | |
3224 | #define TAG_THREADID 1 | |
3225 | #define TAG_EXISTS 2 | |
3226 | #define TAG_DISPLAY 4 | |
3227 | #define TAG_THREADNAME 8 | |
c5aa993b | 3228 | #define TAG_MOREDISPLAY 16 |
cce74817 | 3229 | |
23860348 | 3230 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 3231 | |
cecb1912 | 3232 | static const char *unpack_nibble (const char *buf, int *val); |
cce74817 | 3233 | |
cecb1912 | 3234 | static const char *unpack_byte (const char *buf, int *value); |
cce74817 | 3235 | |
a14ed312 | 3236 | static char *pack_int (char *buf, int value); |
cce74817 | 3237 | |
cecb1912 | 3238 | static const char *unpack_int (const char *buf, int *value); |
cce74817 | 3239 | |
cecb1912 | 3240 | static const char *unpack_string (const char *src, char *dest, int length); |
cce74817 | 3241 | |
23860348 | 3242 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 3243 | |
cecb1912 | 3244 | static const char *unpack_threadid (const char *inbuf, threadref *id); |
cce74817 | 3245 | |
23860348 | 3246 | void int_to_threadref (threadref *id, int value); |
cce74817 | 3247 | |
23860348 | 3248 | static int threadref_to_int (threadref *ref); |
cce74817 | 3249 | |
23860348 | 3250 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 3251 | |
23860348 | 3252 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 3253 | |
2bc416ba | 3254 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 3255 | threadref *id); |
cce74817 | 3256 | |
a14ed312 KB |
3257 | static char *pack_threadlist_request (char *pkt, int startflag, |
3258 | int threadcount, | |
23860348 | 3259 | threadref *nextthread); |
cce74817 | 3260 | |
23860348 | 3261 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 3262 | |
82f73884 PA |
3263 | |
3264 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
3265 | buffer we're allowed to write to. Returns | |
3266 | BUF+CHARACTERS_WRITTEN. */ | |
3267 | ||
6b8edb51 PA |
3268 | char * |
3269 | remote_target::write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
82f73884 PA |
3270 | { |
3271 | int pid, tid; | |
82f73884 | 3272 | |
ff52c073 | 3273 | if (m_features.remote_multi_process_p ()) |
82f73884 | 3274 | { |
e99b03dc | 3275 | pid = ptid.pid (); |
82f73884 PA |
3276 | if (pid < 0) |
3277 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
3278 | else | |
3279 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
3280 | } | |
e38504b3 | 3281 | tid = ptid.lwp (); |
82f73884 PA |
3282 | if (tid < 0) |
3283 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
3284 | else | |
3285 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
3286 | ||
3287 | return buf; | |
3288 | } | |
3289 | ||
256642e8 PA |
3290 | /* Extract a PTID from BUF. If non-null, OBUF is set to one past the |
3291 | last parsed char. Returns null_ptid if no thread id is found, and | |
3292 | throws an error if the thread id has an invalid format. */ | |
82f73884 PA |
3293 | |
3294 | static ptid_t | |
256642e8 | 3295 | read_ptid (const char *buf, const char **obuf) |
82f73884 | 3296 | { |
256642e8 PA |
3297 | const char *p = buf; |
3298 | const char *pp; | |
82f73884 | 3299 | ULONGEST pid = 0, tid = 0; |
82f73884 PA |
3300 | |
3301 | if (*p == 'p') | |
3302 | { | |
3303 | /* Multi-process ptid. */ | |
3304 | pp = unpack_varlen_hex (p + 1, &pid); | |
3305 | if (*pp != '.') | |
b37520b6 | 3306 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
3307 | |
3308 | p = pp; | |
3309 | pp = unpack_varlen_hex (p + 1, &tid); | |
3310 | if (obuf) | |
3311 | *obuf = pp; | |
184ea2f7 | 3312 | return ptid_t (pid, tid); |
82f73884 PA |
3313 | } |
3314 | ||
3315 | /* No multi-process. Just a tid. */ | |
3316 | pp = unpack_varlen_hex (p, &tid); | |
3317 | ||
c9f35b34 KB |
3318 | /* Return null_ptid when no thread id is found. */ |
3319 | if (p == pp) | |
3320 | { | |
3321 | if (obuf) | |
3322 | *obuf = pp; | |
3323 | return null_ptid; | |
3324 | } | |
3325 | ||
2f761de2 TBA |
3326 | /* Since the stub is not sending a process id, default to what's |
3327 | current_inferior, unless it doesn't have a PID yet. If so, | |
ca19bf23 PA |
3328 | then since there's no way to know the pid of the reported |
3329 | threads, use the magic number. */ | |
2f761de2 TBA |
3330 | inferior *inf = current_inferior (); |
3331 | if (inf->pid == 0) | |
e99b03dc | 3332 | pid = magic_null_ptid.pid (); |
ca19bf23 | 3333 | else |
2f761de2 | 3334 | pid = inf->pid; |
82f73884 PA |
3335 | |
3336 | if (obuf) | |
3337 | *obuf = pp; | |
184ea2f7 | 3338 | return ptid_t (pid, tid); |
82f73884 PA |
3339 | } |
3340 | ||
c906108c | 3341 | static int |
fba45db2 | 3342 | stubhex (int ch) |
c906108c SS |
3343 | { |
3344 | if (ch >= 'a' && ch <= 'f') | |
3345 | return ch - 'a' + 10; | |
3346 | if (ch >= '0' && ch <= '9') | |
3347 | return ch - '0'; | |
3348 | if (ch >= 'A' && ch <= 'F') | |
3349 | return ch - 'A' + 10; | |
3350 | return -1; | |
3351 | } | |
3352 | ||
3353 | static int | |
cecb1912 | 3354 | stub_unpack_int (const char *buff, int fieldlength) |
c906108c SS |
3355 | { |
3356 | int nibble; | |
3357 | int retval = 0; | |
3358 | ||
3359 | while (fieldlength) | |
3360 | { | |
3361 | nibble = stubhex (*buff++); | |
3362 | retval |= nibble; | |
3363 | fieldlength--; | |
3364 | if (fieldlength) | |
3365 | retval = retval << 4; | |
3366 | } | |
3367 | return retval; | |
3368 | } | |
3369 | ||
cecb1912 SM |
3370 | static const char * |
3371 | unpack_nibble (const char *buf, int *val) | |
c906108c | 3372 | { |
b7589f7d | 3373 | *val = fromhex (*buf++); |
c906108c SS |
3374 | return buf; |
3375 | } | |
3376 | ||
cecb1912 SM |
3377 | static const char * |
3378 | unpack_byte (const char *buf, int *value) | |
c906108c SS |
3379 | { |
3380 | *value = stub_unpack_int (buf, 2); | |
3381 | return buf + 2; | |
3382 | } | |
3383 | ||
3384 | static char * | |
fba45db2 | 3385 | pack_int (char *buf, int value) |
c906108c SS |
3386 | { |
3387 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
3388 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
3389 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
3390 | buf = pack_hex_byte (buf, (value & 0xff)); | |
3391 | return buf; | |
3392 | } | |
3393 | ||
cecb1912 SM |
3394 | static const char * |
3395 | unpack_int (const char *buf, int *value) | |
c906108c SS |
3396 | { |
3397 | *value = stub_unpack_int (buf, 8); | |
3398 | return buf + 8; | |
3399 | } | |
3400 | ||
23860348 | 3401 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 3402 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
3403 | |
3404 | static char * | |
fba45db2 | 3405 | pack_string (char *pkt, char *string) |
c906108c SS |
3406 | { |
3407 | char ch; | |
3408 | int len; | |
3409 | ||
3410 | len = strlen (string); | |
3411 | if (len > 200) | |
23860348 | 3412 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
3413 | pkt = pack_hex_byte (pkt, len); |
3414 | while (len-- > 0) | |
3415 | { | |
3416 | ch = *string++; | |
3417 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 3418 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
3419 | *pkt++ = ch; |
3420 | } | |
3421 | return pkt; | |
3422 | } | |
3423 | #endif /* 0 (unused) */ | |
3424 | ||
cecb1912 SM |
3425 | static const char * |
3426 | unpack_string (const char *src, char *dest, int length) | |
c906108c SS |
3427 | { |
3428 | while (length--) | |
3429 | *dest++ = *src++; | |
3430 | *dest = '\0'; | |
3431 | return src; | |
3432 | } | |
3433 | ||
3434 | static char * | |
fba45db2 | 3435 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
3436 | { |
3437 | char *limit; | |
3438 | unsigned char *altid; | |
3439 | ||
3440 | altid = (unsigned char *) id; | |
3441 | limit = pkt + BUF_THREAD_ID_SIZE; | |
3442 | while (pkt < limit) | |
3443 | pkt = pack_hex_byte (pkt, *altid++); | |
3444 | return pkt; | |
3445 | } | |
3446 | ||
3447 | ||
cecb1912 SM |
3448 | static const char * |
3449 | unpack_threadid (const char *inbuf, threadref *id) | |
c906108c SS |
3450 | { |
3451 | char *altref; | |
cecb1912 | 3452 | const char *limit = inbuf + BUF_THREAD_ID_SIZE; |
c906108c SS |
3453 | int x, y; |
3454 | ||
3455 | altref = (char *) id; | |
3456 | ||
3457 | while (inbuf < limit) | |
3458 | { | |
3459 | x = stubhex (*inbuf++); | |
3460 | y = stubhex (*inbuf++); | |
3461 | *altref++ = (x << 4) | y; | |
3462 | } | |
3463 | return inbuf; | |
3464 | } | |
3465 | ||
3466 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 3467 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
3468 | to use 64bit thread references internally. This is an adapter |
3469 | function. */ | |
3470 | ||
3471 | void | |
fba45db2 | 3472 | int_to_threadref (threadref *id, int value) |
c906108c SS |
3473 | { |
3474 | unsigned char *scan; | |
3475 | ||
3476 | scan = (unsigned char *) id; | |
3477 | { | |
3478 | int i = 4; | |
3479 | while (i--) | |
3480 | *scan++ = 0; | |
3481 | } | |
3482 | *scan++ = (value >> 24) & 0xff; | |
3483 | *scan++ = (value >> 16) & 0xff; | |
3484 | *scan++ = (value >> 8) & 0xff; | |
3485 | *scan++ = (value & 0xff); | |
3486 | } | |
3487 | ||
3488 | static int | |
fba45db2 | 3489 | threadref_to_int (threadref *ref) |
c906108c SS |
3490 | { |
3491 | int i, value = 0; | |
3492 | unsigned char *scan; | |
3493 | ||
cfd77fa1 | 3494 | scan = *ref; |
c906108c SS |
3495 | scan += 4; |
3496 | i = 4; | |
3497 | while (i-- > 0) | |
3498 | value = (value << 8) | ((*scan++) & 0xff); | |
3499 | return value; | |
3500 | } | |
3501 | ||
3502 | static void | |
fba45db2 | 3503 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
3504 | { |
3505 | int i; | |
3506 | unsigned char *csrc, *cdest; | |
3507 | ||
3508 | csrc = (unsigned char *) src; | |
3509 | cdest = (unsigned char *) dest; | |
3510 | i = 8; | |
3511 | while (i--) | |
3512 | *cdest++ = *csrc++; | |
3513 | } | |
3514 | ||
3515 | static int | |
fba45db2 | 3516 | threadmatch (threadref *dest, threadref *src) |
c906108c | 3517 | { |
23860348 | 3518 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
3519 | #if 0 |
3520 | unsigned char *srcp, *destp; | |
3521 | int i, result; | |
3522 | srcp = (char *) src; | |
3523 | destp = (char *) dest; | |
3524 | ||
3525 | result = 1; | |
3526 | while (i-- > 0) | |
3527 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
3528 | return result; | |
3529 | #endif | |
3530 | return 1; | |
3531 | } | |
3532 | ||
3533 | /* | |
c5aa993b JM |
3534 | threadid:1, # always request threadid |
3535 | context_exists:2, | |
3536 | display:4, | |
3537 | unique_name:8, | |
3538 | more_display:16 | |
3539 | */ | |
c906108c SS |
3540 | |
3541 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
3542 | ||
3543 | static char * | |
fba45db2 | 3544 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 3545 | { |
23860348 MS |
3546 | *pkt++ = 'q'; /* Info Query */ |
3547 | *pkt++ = 'P'; /* process or thread info */ | |
3548 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 3549 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 3550 | *pkt = '\0'; /* terminate */ |
c906108c SS |
3551 | return pkt; |
3552 | } | |
3553 | ||
23860348 | 3554 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 3555 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 3556 | add more fields as time goes by. */ |
c906108c | 3557 | |
23860348 | 3558 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 3559 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 3560 | fetch registers and its stack? */ |
c5aa993b | 3561 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 3562 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 3563 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 3564 | the process. */ |
c906108c | 3565 | |
6b8edb51 | 3566 | int |
cecb1912 | 3567 | remote_target::remote_unpack_thread_info_response (const char *pkt, |
6b8edb51 PA |
3568 | threadref *expectedref, |
3569 | gdb_ext_thread_info *info) | |
c906108c | 3570 | { |
d01949b6 | 3571 | struct remote_state *rs = get_remote_state (); |
c906108c | 3572 | int mask, length; |
cfd77fa1 | 3573 | int tag; |
c906108c | 3574 | threadref ref; |
cecb1912 | 3575 | const char *limit = pkt + rs->buf.size (); /* Plausible parsing limit. */ |
c906108c SS |
3576 | int retval = 1; |
3577 | ||
23860348 | 3578 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
3579 | info->active = 0; |
3580 | info->display[0] = '\0'; | |
3581 | info->shortname[0] = '\0'; | |
3582 | info->more_display[0] = '\0'; | |
3583 | ||
23860348 MS |
3584 | /* Assume the characters indicating the packet type have been |
3585 | stripped. */ | |
c906108c SS |
3586 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
3587 | pkt = unpack_threadid (pkt, &ref); | |
3588 | ||
3589 | if (mask == 0) | |
8a3fe4f8 | 3590 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 3591 | if (!threadmatch (&ref, expectedref)) |
23860348 | 3592 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 3593 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
3594 | return 0; |
3595 | } | |
3596 | copy_threadref (&info->threadid, &ref); | |
3597 | ||
405feb71 | 3598 | /* Loop on tagged fields , try to bail if something goes wrong. */ |
c906108c | 3599 | |
23860348 MS |
3600 | /* Packets are terminated with nulls. */ |
3601 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
3602 | { |
3603 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
3604 | pkt = unpack_byte (pkt, &length); /* length */ |
3605 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 3606 | { |
8a3fe4f8 | 3607 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
3608 | retval = 0; |
3609 | break; | |
3610 | } | |
3611 | if (tag == TAG_THREADID) | |
3612 | { | |
3613 | if (length != 16) | |
3614 | { | |
8a3fe4f8 | 3615 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
3616 | retval = 0; |
3617 | break; | |
3618 | } | |
3619 | pkt = unpack_threadid (pkt, &ref); | |
3620 | mask = mask & ~TAG_THREADID; | |
3621 | continue; | |
3622 | } | |
3623 | if (tag == TAG_EXISTS) | |
3624 | { | |
3625 | info->active = stub_unpack_int (pkt, length); | |
3626 | pkt += length; | |
3627 | mask = mask & ~(TAG_EXISTS); | |
3628 | if (length > 8) | |
3629 | { | |
8a3fe4f8 | 3630 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
3631 | retval = 0; |
3632 | break; | |
3633 | } | |
3634 | continue; | |
3635 | } | |
3636 | if (tag == TAG_THREADNAME) | |
3637 | { | |
3638 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
3639 | mask = mask & ~TAG_THREADNAME; | |
3640 | continue; | |
3641 | } | |
3642 | if (tag == TAG_DISPLAY) | |
3643 | { | |
3644 | pkt = unpack_string (pkt, &info->display[0], length); | |
3645 | mask = mask & ~TAG_DISPLAY; | |
3646 | continue; | |
3647 | } | |
3648 | if (tag == TAG_MOREDISPLAY) | |
3649 | { | |
3650 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
3651 | mask = mask & ~TAG_MOREDISPLAY; | |
3652 | continue; | |
3653 | } | |
8a3fe4f8 | 3654 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 3655 | break; /* Not a tag we know about. */ |
c906108c SS |
3656 | } |
3657 | return retval; | |
3658 | } | |
3659 | ||
6b8edb51 PA |
3660 | int |
3661 | remote_target::remote_get_threadinfo (threadref *threadid, | |
3662 | int fieldset, | |
3663 | gdb_ext_thread_info *info) | |
c906108c | 3664 | { |
d01949b6 | 3665 | struct remote_state *rs = get_remote_state (); |
c906108c | 3666 | int result; |
c906108c | 3667 | |
8d64371b | 3668 | pack_threadinfo_request (rs->buf.data (), fieldset, threadid); |
2e9f7625 | 3669 | putpkt (rs->buf); |
8d64371b | 3670 | getpkt (&rs->buf, 0); |
3084dd77 PA |
3671 | |
3672 | if (rs->buf[0] == '\0') | |
3673 | return 0; | |
3674 | ||
8d64371b | 3675 | result = remote_unpack_thread_info_response (&rs->buf[2], |
23860348 | 3676 | threadid, info); |
c906108c SS |
3677 | return result; |
3678 | } | |
3679 | ||
c906108c SS |
3680 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
3681 | ||
3682 | static char * | |
fba45db2 KB |
3683 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
3684 | threadref *nextthread) | |
c906108c SS |
3685 | { |
3686 | *pkt++ = 'q'; /* info query packet */ | |
3687 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 3688 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
3689 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
3690 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
3691 | *pkt = '\0'; | |
3692 | return pkt; | |
3693 | } | |
3694 | ||
3695 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
3696 | ||
6b8edb51 | 3697 | int |
cecb1912 | 3698 | remote_target::parse_threadlist_response (const char *pkt, int result_limit, |
6b8edb51 PA |
3699 | threadref *original_echo, |
3700 | threadref *resultlist, | |
3701 | int *doneflag) | |
c906108c | 3702 | { |
d01949b6 | 3703 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3704 | int count, resultcount, done; |
3705 | ||
3706 | resultcount = 0; | |
3707 | /* Assume the 'q' and 'M chars have been stripped. */ | |
cecb1912 | 3708 | const char *limit = pkt + (rs->buf.size () - BUF_THREAD_ID_SIZE); |
23860348 | 3709 | /* done parse past here */ |
c906108c SS |
3710 | pkt = unpack_byte (pkt, &count); /* count field */ |
3711 | pkt = unpack_nibble (pkt, &done); | |
3712 | /* The first threadid is the argument threadid. */ | |
3713 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
3714 | while ((count-- > 0) && (pkt < limit)) | |
3715 | { | |
3716 | pkt = unpack_threadid (pkt, resultlist++); | |
3717 | if (resultcount++ >= result_limit) | |
3718 | break; | |
3719 | } | |
3720 | if (doneflag) | |
3721 | *doneflag = done; | |
3722 | return resultcount; | |
3723 | } | |
3724 | ||
6dc54d91 PA |
3725 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
3726 | qL packet is not supported, 0 on error and 1 on success. */ | |
3727 | ||
6b8edb51 PA |
3728 | int |
3729 | remote_target::remote_get_threadlist (int startflag, threadref *nextthread, | |
3730 | int result_limit, int *done, int *result_count, | |
3731 | threadref *threadlist) | |
c906108c | 3732 | { |
d01949b6 | 3733 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3734 | int result = 1; |
3735 | ||
405feb71 | 3736 | /* Truncate result limit to be smaller than the packet size. */ |
3e43a32a MS |
3737 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
3738 | >= get_remote_packet_size ()) | |
ea9c271d | 3739 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 3740 | |
8d64371b TT |
3741 | pack_threadlist_request (rs->buf.data (), startflag, result_limit, |
3742 | nextthread); | |
6d820c5c | 3743 | putpkt (rs->buf); |
8d64371b TT |
3744 | getpkt (&rs->buf, 0); |
3745 | if (rs->buf[0] == '\0') | |
6dc54d91 PA |
3746 | { |
3747 | /* Packet not supported. */ | |
3748 | return -1; | |
3749 | } | |
3750 | ||
3751 | *result_count = | |
8d64371b | 3752 | parse_threadlist_response (&rs->buf[2], result_limit, |
6dc54d91 | 3753 | &rs->echo_nextthread, threadlist, done); |
c906108c | 3754 | |
0d031856 | 3755 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 3756 | { |
23860348 | 3757 | /* FIXME: This is a good reason to drop the packet. */ |
405feb71 TV |
3758 | /* Possibly, there is a duplicate response. */ |
3759 | /* Possibilities : | |
dda83cd7 SM |
3760 | retransmit immediatly - race conditions |
3761 | retransmit after timeout - yes | |
3762 | exit | |
3763 | wait for packet, then exit | |
c906108c | 3764 | */ |
8a3fe4f8 | 3765 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 3766 | return 0; /* I choose simply exiting. */ |
c906108c SS |
3767 | } |
3768 | if (*result_count <= 0) | |
3769 | { | |
3770 | if (*done != 1) | |
3771 | { | |
8a3fe4f8 | 3772 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
3773 | result = 0; |
3774 | } | |
3775 | return result; /* break; */ | |
3776 | } | |
3777 | if (*result_count > result_limit) | |
3778 | { | |
3779 | *result_count = 0; | |
8a3fe4f8 | 3780 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
3781 | return 0; |
3782 | } | |
3783 | return result; | |
3784 | } | |
3785 | ||
6dc54d91 PA |
3786 | /* Fetch the list of remote threads, with the qL packet, and call |
3787 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
3788 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
3789 | STEPFUNCTION returns false. If the packet is not supported, | |
3790 | returns -1. */ | |
c906108c | 3791 | |
6b8edb51 PA |
3792 | int |
3793 | remote_target::remote_threadlist_iterator (rmt_thread_action stepfunction, | |
3794 | void *context, int looplimit) | |
c906108c | 3795 | { |
0d031856 | 3796 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3797 | int done, i, result_count; |
3798 | int startflag = 1; | |
3799 | int result = 1; | |
3800 | int loopcount = 0; | |
c906108c SS |
3801 | |
3802 | done = 0; | |
3803 | while (!done) | |
3804 | { | |
3805 | if (loopcount++ > looplimit) | |
3806 | { | |
3807 | result = 0; | |
8a3fe4f8 | 3808 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
3809 | break; |
3810 | } | |
6dc54d91 PA |
3811 | result = remote_get_threadlist (startflag, &rs->nextthread, |
3812 | MAXTHREADLISTRESULTS, | |
3813 | &done, &result_count, | |
3814 | rs->resultthreadlist); | |
3815 | if (result <= 0) | |
3816 | break; | |
23860348 | 3817 | /* Clear for later iterations. */ |
c906108c SS |
3818 | startflag = 0; |
3819 | /* Setup to resume next batch of thread references, set nextthread. */ | |
3820 | if (result_count >= 1) | |
0d031856 TT |
3821 | copy_threadref (&rs->nextthread, |
3822 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
3823 | i = 0; |
3824 | while (result_count--) | |
6dc54d91 PA |
3825 | { |
3826 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
3827 | { | |
3828 | result = 0; | |
3829 | break; | |
3830 | } | |
3831 | } | |
c906108c SS |
3832 | } |
3833 | return result; | |
3834 | } | |
3835 | ||
6dc54d91 PA |
3836 | /* A thread found on the remote target. */ |
3837 | ||
21fe1c75 | 3838 | struct thread_item |
6dc54d91 | 3839 | { |
21fe1c75 SM |
3840 | explicit thread_item (ptid_t ptid_) |
3841 | : ptid (ptid_) | |
3842 | {} | |
3843 | ||
3844 | thread_item (thread_item &&other) = default; | |
3845 | thread_item &operator= (thread_item &&other) = default; | |
3846 | ||
3847 | DISABLE_COPY_AND_ASSIGN (thread_item); | |
3848 | ||
6dc54d91 PA |
3849 | /* The thread's PTID. */ |
3850 | ptid_t ptid; | |
3851 | ||
21fe1c75 SM |
3852 | /* The thread's extra info. */ |
3853 | std::string extra; | |
6dc54d91 | 3854 | |
21fe1c75 SM |
3855 | /* The thread's name. */ |
3856 | std::string name; | |
79efa585 | 3857 | |
6dc54d91 | 3858 | /* The core the thread was running on. -1 if not known. */ |
21fe1c75 | 3859 | int core = -1; |
f6327dcb KB |
3860 | |
3861 | /* The thread handle associated with the thread. */ | |
21fe1c75 | 3862 | gdb::byte_vector thread_handle; |
21fe1c75 | 3863 | }; |
6dc54d91 PA |
3864 | |
3865 | /* Context passed around to the various methods listing remote | |
3866 | threads. As new threads are found, they're added to the ITEMS | |
3867 | vector. */ | |
3868 | ||
3869 | struct threads_listing_context | |
3870 | { | |
21fe1c75 SM |
3871 | /* Return true if this object contains an entry for a thread with ptid |
3872 | PTID. */ | |
6dc54d91 | 3873 | |
21fe1c75 SM |
3874 | bool contains_thread (ptid_t ptid) const |
3875 | { | |
3876 | auto match_ptid = [&] (const thread_item &item) | |
3877 | { | |
3878 | return item.ptid == ptid; | |
3879 | }; | |
80134cf5 | 3880 | |
21fe1c75 SM |
3881 | auto it = std::find_if (this->items.begin (), |
3882 | this->items.end (), | |
3883 | match_ptid); | |
80134cf5 | 3884 | |
21fe1c75 SM |
3885 | return it != this->items.end (); |
3886 | } | |
80134cf5 | 3887 | |
21fe1c75 | 3888 | /* Remove the thread with ptid PTID. */ |
80134cf5 | 3889 | |
21fe1c75 SM |
3890 | void remove_thread (ptid_t ptid) |
3891 | { | |
3892 | auto match_ptid = [&] (const thread_item &item) | |
3893 | { | |
dda83cd7 | 3894 | return item.ptid == ptid; |
21fe1c75 | 3895 | }; |
cbb8991c | 3896 | |
21fe1c75 SM |
3897 | auto it = std::remove_if (this->items.begin (), |
3898 | this->items.end (), | |
3899 | match_ptid); | |
cbb8991c | 3900 | |
21fe1c75 SM |
3901 | if (it != this->items.end ()) |
3902 | this->items.erase (it); | |
3903 | } | |
3904 | ||
3905 | /* The threads found on the remote target. */ | |
3906 | std::vector<thread_item> items; | |
3907 | }; | |
cbb8991c | 3908 | |
c906108c | 3909 | static int |
6dc54d91 | 3910 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 3911 | { |
19ba03f4 SM |
3912 | struct threads_listing_context *context |
3913 | = (struct threads_listing_context *) data; | |
21fe1c75 SM |
3914 | int pid = inferior_ptid.pid (); |
3915 | int lwp = threadref_to_int (ref); | |
3916 | ptid_t ptid (pid, lwp); | |
6dc54d91 | 3917 | |
21fe1c75 | 3918 | context->items.emplace_back (ptid); |
6dc54d91 | 3919 | |
c906108c SS |
3920 | return 1; /* continue iterator */ |
3921 | } | |
3922 | ||
3923 | #define CRAZY_MAX_THREADS 1000 | |
3924 | ||
6b8edb51 PA |
3925 | ptid_t |
3926 | remote_target::remote_current_thread (ptid_t oldpid) | |
c906108c | 3927 | { |
d01949b6 | 3928 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3929 | |
3930 | putpkt ("qC"); | |
8d64371b | 3931 | getpkt (&rs->buf, 0); |
2e9f7625 | 3932 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c9f35b34 | 3933 | { |
256642e8 | 3934 | const char *obuf; |
c9f35b34 KB |
3935 | ptid_t result; |
3936 | ||
3937 | result = read_ptid (&rs->buf[2], &obuf); | |
2189c312 SM |
3938 | if (*obuf != '\0') |
3939 | remote_debug_printf ("warning: garbage in qC reply"); | |
c9f35b34 KB |
3940 | |
3941 | return result; | |
3942 | } | |
c906108c SS |
3943 | else |
3944 | return oldpid; | |
3945 | } | |
3946 | ||
6dc54d91 | 3947 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 3948 | |
6b8edb51 PA |
3949 | int |
3950 | remote_target::remote_get_threads_with_ql (threads_listing_context *context) | |
c906108c | 3951 | { |
6dc54d91 PA |
3952 | if (remote_threadlist_iterator (remote_newthread_step, context, |
3953 | CRAZY_MAX_THREADS) >= 0) | |
3954 | return 1; | |
3955 | ||
3956 | return 0; | |
c906108c SS |
3957 | } |
3958 | ||
dc146f7c VP |
3959 | #if defined(HAVE_LIBEXPAT) |
3960 | ||
dc146f7c VP |
3961 | static void |
3962 | start_thread (struct gdb_xml_parser *parser, | |
3963 | const struct gdb_xml_element *element, | |
4d0fdd9b SM |
3964 | void *user_data, |
3965 | std::vector<gdb_xml_value> &attributes) | |
dc146f7c | 3966 | { |
19ba03f4 SM |
3967 | struct threads_listing_context *data |
3968 | = (struct threads_listing_context *) user_data; | |
3d2c1d41 | 3969 | struct gdb_xml_value *attr; |
dc146f7c | 3970 | |
4d0fdd9b | 3971 | char *id = (char *) xml_find_attribute (attributes, "id")->value.get (); |
21fe1c75 SM |
3972 | ptid_t ptid = read_ptid (id, NULL); |
3973 | ||
3974 | data->items.emplace_back (ptid); | |
3975 | thread_item &item = data->items.back (); | |
dc146f7c | 3976 | |
3d2c1d41 PA |
3977 | attr = xml_find_attribute (attributes, "core"); |
3978 | if (attr != NULL) | |
4d0fdd9b | 3979 | item.core = *(ULONGEST *) attr->value.get (); |
dc146f7c | 3980 | |
79efa585 | 3981 | attr = xml_find_attribute (attributes, "name"); |
21fe1c75 | 3982 | if (attr != NULL) |
4d0fdd9b | 3983 | item.name = (const char *) attr->value.get (); |
79efa585 | 3984 | |
f6327dcb KB |
3985 | attr = xml_find_attribute (attributes, "handle"); |
3986 | if (attr != NULL) | |
4d0fdd9b | 3987 | item.thread_handle = hex2bin ((const char *) attr->value.get ()); |
dc146f7c VP |
3988 | } |
3989 | ||
3990 | static void | |
3991 | end_thread (struct gdb_xml_parser *parser, | |
3992 | const struct gdb_xml_element *element, | |
3993 | void *user_data, const char *body_text) | |
3994 | { | |
19ba03f4 SM |
3995 | struct threads_listing_context *data |
3996 | = (struct threads_listing_context *) user_data; | |
dc146f7c | 3997 | |
21fe1c75 SM |
3998 | if (body_text != NULL && *body_text != '\0') |
3999 | data->items.back ().extra = body_text; | |
dc146f7c VP |
4000 | } |
4001 | ||
4002 | const struct gdb_xml_attribute thread_attributes[] = { | |
4003 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
4004 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
79efa585 | 4005 | { "name", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
f6327dcb | 4006 | { "handle", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
dc146f7c VP |
4007 | { NULL, GDB_XML_AF_NONE, NULL, NULL } |
4008 | }; | |
4009 | ||
4010 | const struct gdb_xml_element thread_children[] = { | |
4011 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
4012 | }; | |
4013 | ||
4014 | const struct gdb_xml_element threads_children[] = { | |
4015 | { "thread", thread_attributes, thread_children, | |
4016 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
4017 | start_thread, end_thread }, | |
4018 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
4019 | }; | |
4020 | ||
4021 | const struct gdb_xml_element threads_elements[] = { | |
4022 | { "threads", NULL, threads_children, | |
4023 | GDB_XML_EF_NONE, NULL, NULL }, | |
4024 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
4025 | }; | |
4026 | ||
4027 | #endif | |
4028 | ||
6dc54d91 | 4029 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 4030 | |
6b8edb51 PA |
4031 | int |
4032 | remote_target::remote_get_threads_with_qxfer (threads_listing_context *context) | |
0f71a2f6 | 4033 | { |
dc146f7c | 4034 | #if defined(HAVE_LIBEXPAT) |
ff52c073 | 4035 | if (m_features.packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 4036 | { |
9018be22 | 4037 | gdb::optional<gdb::char_vector> xml |
6b8edb51 | 4038 | = target_read_stralloc (this, TARGET_OBJECT_THREADS, NULL); |
efc0eabd | 4039 | |
9018be22 | 4040 | if (xml && (*xml)[0] != '\0') |
dc146f7c | 4041 | { |
6dc54d91 | 4042 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
9018be22 | 4043 | threads_elements, xml->data (), context); |
dc146f7c VP |
4044 | } |
4045 | ||
6dc54d91 | 4046 | return 1; |
dc146f7c VP |
4047 | } |
4048 | #endif | |
4049 | ||
6dc54d91 PA |
4050 | return 0; |
4051 | } | |
4052 | ||
4053 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
4054 | ||
6b8edb51 PA |
4055 | int |
4056 | remote_target::remote_get_threads_with_qthreadinfo (threads_listing_context *context) | |
6dc54d91 PA |
4057 | { |
4058 | struct remote_state *rs = get_remote_state (); | |
4059 | ||
b80fafe3 | 4060 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 4061 | { |
256642e8 | 4062 | const char *bufp; |
6dc54d91 | 4063 | |
9d1f7ab2 | 4064 | putpkt ("qfThreadInfo"); |
8d64371b TT |
4065 | getpkt (&rs->buf, 0); |
4066 | bufp = rs->buf.data (); | |
9d1f7ab2 | 4067 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 4068 | { |
9d1f7ab2 MS |
4069 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
4070 | { | |
4071 | do | |
4072 | { | |
21fe1c75 SM |
4073 | ptid_t ptid = read_ptid (bufp, &bufp); |
4074 | context->items.emplace_back (ptid); | |
9d1f7ab2 MS |
4075 | } |
4076 | while (*bufp++ == ','); /* comma-separated list */ | |
4077 | putpkt ("qsThreadInfo"); | |
8d64371b TT |
4078 | getpkt (&rs->buf, 0); |
4079 | bufp = rs->buf.data (); | |
9d1f7ab2 | 4080 | } |
6dc54d91 PA |
4081 | return 1; |
4082 | } | |
4083 | else | |
4084 | { | |
4085 | /* Packet not recognized. */ | |
4086 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
4087 | } |
4088 | } | |
4089 | ||
6dc54d91 PA |
4090 | return 0; |
4091 | } | |
4092 | ||
a05575d3 TBA |
4093 | /* Return true if INF only has one non-exited thread. */ |
4094 | ||
4095 | static bool | |
4096 | has_single_non_exited_thread (inferior *inf) | |
4097 | { | |
4098 | int count = 0; | |
4099 | for (thread_info *tp ATTRIBUTE_UNUSED : inf->non_exited_threads ()) | |
4100 | if (++count > 1) | |
4101 | break; | |
4102 | return count == 1; | |
4103 | } | |
4104 | ||
e8032dde | 4105 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
4106 | targets. */ |
4107 | ||
f6ac5f3d PA |
4108 | void |
4109 | remote_target::update_thread_list () | |
6dc54d91 | 4110 | { |
6dc54d91 | 4111 | struct threads_listing_context context; |
ab970af1 | 4112 | int got_list = 0; |
e8032dde | 4113 | |
6dc54d91 PA |
4114 | /* We have a few different mechanisms to fetch the thread list. Try |
4115 | them all, starting with the most preferred one first, falling | |
4116 | back to older methods. */ | |
6b8edb51 PA |
4117 | if (remote_get_threads_with_qxfer (&context) |
4118 | || remote_get_threads_with_qthreadinfo (&context) | |
4119 | || remote_get_threads_with_ql (&context)) | |
6dc54d91 | 4120 | { |
ab970af1 PA |
4121 | got_list = 1; |
4122 | ||
21fe1c75 | 4123 | if (context.items.empty () |
f6ac5f3d | 4124 | && remote_thread_always_alive (inferior_ptid)) |
7d1a114c PA |
4125 | { |
4126 | /* Some targets don't really support threads, but still | |
4127 | reply an (empty) thread list in response to the thread | |
4128 | listing packets, instead of replying "packet not | |
4129 | supported". Exit early so we don't delete the main | |
4130 | thread. */ | |
7d1a114c PA |
4131 | return; |
4132 | } | |
4133 | ||
ab970af1 PA |
4134 | /* CONTEXT now holds the current thread list on the remote |
4135 | target end. Delete GDB-side threads no longer found on the | |
4136 | target. */ | |
08036331 | 4137 | for (thread_info *tp : all_threads_safe ()) |
cbb8991c | 4138 | { |
5b6d1e4f PA |
4139 | if (tp->inf->process_target () != this) |
4140 | continue; | |
4141 | ||
21fe1c75 | 4142 | if (!context.contains_thread (tp->ptid)) |
ab970af1 | 4143 | { |
a05575d3 TBA |
4144 | /* Do not remove the thread if it is the last thread in |
4145 | the inferior. This situation happens when we have a | |
4146 | pending exit process status to process. Otherwise we | |
4147 | may end up with a seemingly live inferior (i.e. pid | |
4148 | != 0) that has no threads. */ | |
4149 | if (has_single_non_exited_thread (tp->inf)) | |
4150 | continue; | |
4151 | ||
ab970af1 | 4152 | /* Not found. */ |
00431a78 | 4153 | delete_thread (tp); |
ab970af1 | 4154 | } |
cbb8991c DB |
4155 | } |
4156 | ||
4157 | /* Remove any unreported fork child threads from CONTEXT so | |
4158 | that we don't interfere with follow fork, which is where | |
4159 | creation of such threads is handled. */ | |
4160 | remove_new_fork_children (&context); | |
74531fed | 4161 | |
ab970af1 | 4162 | /* And now add threads we don't know about yet to our list. */ |
21fe1c75 | 4163 | for (thread_item &item : context.items) |
6dc54d91 | 4164 | { |
21fe1c75 | 4165 | if (item.ptid != null_ptid) |
6dc54d91 | 4166 | { |
6dc54d91 | 4167 | /* In non-stop mode, we assume new found threads are |
0d5b594f PA |
4168 | executing until proven otherwise with a stop reply. |
4169 | In all-stop, we can only get here if all threads are | |
6dc54d91 | 4170 | stopped. */ |
8a82de58 | 4171 | bool executing = target_is_non_stop_p (); |
6dc54d91 | 4172 | |
21fe1c75 | 4173 | remote_notice_new_inferior (item.ptid, executing); |
6dc54d91 | 4174 | |
9213a6d7 | 4175 | thread_info *tp = this->find_thread (item.ptid); |
00431a78 | 4176 | remote_thread_info *info = get_remote_thread_info (tp); |
21fe1c75 | 4177 | info->core = item.core; |
7aabaf9d SM |
4178 | info->extra = std::move (item.extra); |
4179 | info->name = std::move (item.name); | |
4180 | info->thread_handle = std::move (item.thread_handle); | |
6dc54d91 PA |
4181 | } |
4182 | } | |
4183 | } | |
4184 | ||
ab970af1 PA |
4185 | if (!got_list) |
4186 | { | |
4187 | /* If no thread listing method is supported, then query whether | |
4188 | each known thread is alive, one by one, with the T packet. | |
4189 | If the target doesn't support threads at all, then this is a | |
4190 | no-op. See remote_thread_alive. */ | |
4191 | prune_threads (); | |
4192 | } | |
9d1f7ab2 MS |
4193 | } |
4194 | ||
802188a7 | 4195 | /* |
9d1f7ab2 MS |
4196 | * Collect a descriptive string about the given thread. |
4197 | * The target may say anything it wants to about the thread | |
4198 | * (typically info about its blocked / runnable state, name, etc.). | |
4199 | * This string will appear in the info threads display. | |
802188a7 | 4200 | * |
9d1f7ab2 MS |
4201 | * Optional: targets are not required to implement this function. |
4202 | */ | |
4203 | ||
f6ac5f3d PA |
4204 | const char * |
4205 | remote_target::extra_thread_info (thread_info *tp) | |
9d1f7ab2 | 4206 | { |
d01949b6 | 4207 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
4208 | int set; |
4209 | threadref id; | |
4210 | struct gdb_ext_thread_info threadinfo; | |
9d1f7ab2 | 4211 | |
5d93a237 | 4212 | if (rs->remote_desc == 0) /* paranoia */ |
f34652de | 4213 | internal_error (_("remote_threads_extra_info")); |
9d1f7ab2 | 4214 | |
d7e15655 | 4215 | if (tp->ptid == magic_null_ptid |
e38504b3 | 4216 | || (tp->ptid.pid () != 0 && tp->ptid.lwp () == 0)) |
60e569b9 PA |
4217 | /* This is the main thread which was added by GDB. The remote |
4218 | server doesn't know about it. */ | |
4219 | return NULL; | |
4220 | ||
c76a8ea3 PA |
4221 | std::string &extra = get_remote_thread_info (tp)->extra; |
4222 | ||
4223 | /* If already have cached info, use it. */ | |
4224 | if (!extra.empty ()) | |
4225 | return extra.c_str (); | |
4226 | ||
ff52c073 | 4227 | if (m_features.packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 4228 | { |
c76a8ea3 PA |
4229 | /* If we're using qXfer:threads:read, then the extra info is |
4230 | included in the XML. So if we didn't have anything cached, | |
4231 | it's because there's really no extra info. */ | |
4232 | return NULL; | |
dc146f7c VP |
4233 | } |
4234 | ||
b80fafe3 | 4235 | if (rs->use_threadextra_query) |
9d1f7ab2 | 4236 | { |
8d64371b TT |
4237 | char *b = rs->buf.data (); |
4238 | char *endb = b + get_remote_packet_size (); | |
82f73884 PA |
4239 | |
4240 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
4241 | b += strlen (b); | |
4242 | write_ptid (b, endb, tp->ptid); | |
4243 | ||
2e9f7625 | 4244 | putpkt (rs->buf); |
8d64371b | 4245 | getpkt (&rs->buf, 0); |
2e9f7625 | 4246 | if (rs->buf[0] != 0) |
9d1f7ab2 | 4247 | { |
8d64371b TT |
4248 | extra.resize (strlen (rs->buf.data ()) / 2); |
4249 | hex2bin (rs->buf.data (), (gdb_byte *) &extra[0], extra.size ()); | |
c76a8ea3 | 4250 | return extra.c_str (); |
9d1f7ab2 | 4251 | } |
0f71a2f6 | 4252 | } |
9d1f7ab2 MS |
4253 | |
4254 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 4255 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
4256 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
4257 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
e38504b3 | 4258 | int_to_threadref (&id, tp->ptid.lwp ()); |
9d1f7ab2 MS |
4259 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
4260 | if (threadinfo.active) | |
0f71a2f6 | 4261 | { |
9d1f7ab2 | 4262 | if (*threadinfo.shortname) |
c76a8ea3 | 4263 | string_appendf (extra, " Name: %s", threadinfo.shortname); |
9d1f7ab2 | 4264 | if (*threadinfo.display) |
c76a8ea3 PA |
4265 | { |
4266 | if (!extra.empty ()) | |
4267 | extra += ','; | |
4268 | string_appendf (extra, " State: %s", threadinfo.display); | |
4269 | } | |
9d1f7ab2 | 4270 | if (*threadinfo.more_display) |
c5aa993b | 4271 | { |
c76a8ea3 PA |
4272 | if (!extra.empty ()) |
4273 | extra += ','; | |
4274 | string_appendf (extra, " Priority: %s", threadinfo.more_display); | |
c5aa993b | 4275 | } |
c76a8ea3 | 4276 | return extra.c_str (); |
0f71a2f6 | 4277 | } |
9d1f7ab2 | 4278 | return NULL; |
0f71a2f6 | 4279 | } |
c906108c | 4280 | \f |
c5aa993b | 4281 | |
f6ac5f3d PA |
4282 | bool |
4283 | remote_target::static_tracepoint_marker_at (CORE_ADDR addr, | |
4284 | struct static_tracepoint_marker *marker) | |
0fb4aa4b PA |
4285 | { |
4286 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 4287 | char *p = rs->buf.data (); |
0fb4aa4b | 4288 | |
bba74b36 | 4289 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
4290 | p += strlen (p); |
4291 | p += hexnumstr (p, addr); | |
4292 | putpkt (rs->buf); | |
8d64371b TT |
4293 | getpkt (&rs->buf, 0); |
4294 | p = rs->buf.data (); | |
0fb4aa4b PA |
4295 | |
4296 | if (*p == 'E') | |
4297 | error (_("Remote failure reply: %s"), p); | |
4298 | ||
4299 | if (*p++ == 'm') | |
4300 | { | |
256642e8 | 4301 | parse_static_tracepoint_marker_definition (p, NULL, marker); |
5d9310c4 | 4302 | return true; |
0fb4aa4b PA |
4303 | } |
4304 | ||
5d9310c4 | 4305 | return false; |
0fb4aa4b PA |
4306 | } |
4307 | ||
f6ac5f3d PA |
4308 | std::vector<static_tracepoint_marker> |
4309 | remote_target::static_tracepoint_markers_by_strid (const char *strid) | |
0fb4aa4b PA |
4310 | { |
4311 | struct remote_state *rs = get_remote_state (); | |
5d9310c4 | 4312 | std::vector<static_tracepoint_marker> markers; |
256642e8 | 4313 | const char *p; |
5d9310c4 | 4314 | static_tracepoint_marker marker; |
0fb4aa4b PA |
4315 | |
4316 | /* Ask for a first packet of static tracepoint marker | |
4317 | definition. */ | |
4318 | putpkt ("qTfSTM"); | |
8d64371b TT |
4319 | getpkt (&rs->buf, 0); |
4320 | p = rs->buf.data (); | |
0fb4aa4b PA |
4321 | if (*p == 'E') |
4322 | error (_("Remote failure reply: %s"), p); | |
4323 | ||
0fb4aa4b PA |
4324 | while (*p++ == 'm') |
4325 | { | |
0fb4aa4b PA |
4326 | do |
4327 | { | |
5d9310c4 | 4328 | parse_static_tracepoint_marker_definition (p, &p, &marker); |
0fb4aa4b | 4329 | |
5d9310c4 SM |
4330 | if (strid == NULL || marker.str_id == strid) |
4331 | markers.push_back (std::move (marker)); | |
0fb4aa4b PA |
4332 | } |
4333 | while (*p++ == ','); /* comma-separated list */ | |
4334 | /* Ask for another packet of static tracepoint definition. */ | |
4335 | putpkt ("qTsSTM"); | |
8d64371b TT |
4336 | getpkt (&rs->buf, 0); |
4337 | p = rs->buf.data (); | |
0fb4aa4b PA |
4338 | } |
4339 | ||
0fb4aa4b PA |
4340 | return markers; |
4341 | } | |
4342 | ||
4343 | \f | |
10760264 JB |
4344 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
4345 | ||
f6ac5f3d | 4346 | ptid_t |
c80e29db | 4347 | remote_target::get_ada_task_ptid (long lwp, ULONGEST thread) |
10760264 | 4348 | { |
184ea2f7 | 4349 | return ptid_t (inferior_ptid.pid (), lwp); |
10760264 JB |
4350 | } |
4351 | \f | |
4352 | ||
24b06219 | 4353 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c | 4354 | |
6b8edb51 PA |
4355 | void |
4356 | remote_target::extended_remote_restart () | |
c906108c | 4357 | { |
d01949b6 | 4358 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4359 | |
4360 | /* Send the restart command; for reasons I don't understand the | |
4361 | remote side really expects a number after the "R". */ | |
8d64371b | 4362 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "R%x", 0); |
6d820c5c | 4363 | putpkt (rs->buf); |
c906108c | 4364 | |
ad9a8f3f | 4365 | remote_fileio_reset (); |
c906108c SS |
4366 | } |
4367 | \f | |
4368 | /* Clean up connection to a remote debugger. */ | |
4369 | ||
f6ac5f3d PA |
4370 | void |
4371 | remote_target::close () | |
c906108c | 4372 | { |
048094ac | 4373 | /* Make sure we leave stdin registered in the event loop. */ |
f6ac5f3d | 4374 | terminal_ours (); |
ce5ce7ed | 4375 | |
6b8edb51 PA |
4376 | trace_reset_local_state (); |
4377 | ||
4378 | delete this; | |
4379 | } | |
4380 | ||
4381 | remote_target::~remote_target () | |
4382 | { | |
4383 | struct remote_state *rs = get_remote_state (); | |
4384 | ||
4385 | /* Check for NULL because we may get here with a partially | |
4386 | constructed target/connection. */ | |
4387 | if (rs->remote_desc == nullptr) | |
4388 | return; | |
4389 | ||
4390 | serial_close (rs->remote_desc); | |
4391 | ||
4392 | /* We are destroying the remote target, so we should discard | |
f48ff2a7 | 4393 | everything of this target. */ |
6b8edb51 | 4394 | discard_pending_stop_replies_in_queue (); |
74531fed | 4395 | |
6b8edb51 PA |
4396 | if (rs->remote_async_inferior_event_token) |
4397 | delete_async_event_handler (&rs->remote_async_inferior_event_token); | |
722247f1 | 4398 | |
97dfbadd | 4399 | delete rs->notif_state; |
c906108c SS |
4400 | } |
4401 | ||
23860348 | 4402 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c | 4403 | |
6b8edb51 PA |
4404 | void |
4405 | remote_target::get_offsets () | |
c906108c | 4406 | { |
d01949b6 | 4407 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 4408 | char *buf; |
085dd6e6 | 4409 | char *ptr; |
31d99776 DJ |
4410 | int lose, num_segments = 0, do_sections, do_segments; |
4411 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
31d99776 | 4412 | |
a42d7dd8 | 4413 | if (current_program_space->symfile_object_file == NULL) |
31d99776 | 4414 | return; |
c906108c SS |
4415 | |
4416 | putpkt ("qOffsets"); | |
8d64371b TT |
4417 | getpkt (&rs->buf, 0); |
4418 | buf = rs->buf.data (); | |
c906108c SS |
4419 | |
4420 | if (buf[0] == '\000') | |
4421 | return; /* Return silently. Stub doesn't support | |
23860348 | 4422 | this command. */ |
c906108c SS |
4423 | if (buf[0] == 'E') |
4424 | { | |
8a3fe4f8 | 4425 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
4426 | return; |
4427 | } | |
4428 | ||
4429 | /* Pick up each field in turn. This used to be done with scanf, but | |
4430 | scanf will make trouble if CORE_ADDR size doesn't match | |
4431 | conversion directives correctly. The following code will work | |
4432 | with any size of CORE_ADDR. */ | |
4433 | text_addr = data_addr = bss_addr = 0; | |
4434 | ptr = buf; | |
4435 | lose = 0; | |
4436 | ||
61012eef | 4437 | if (startswith (ptr, "Text=")) |
c906108c SS |
4438 | { |
4439 | ptr += 5; | |
4440 | /* Don't use strtol, could lose on big values. */ | |
4441 | while (*ptr && *ptr != ';') | |
4442 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 4443 | |
61012eef | 4444 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
4445 | { |
4446 | ptr += 6; | |
4447 | while (*ptr && *ptr != ';') | |
4448 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
4449 | } | |
4450 | else | |
4451 | lose = 1; | |
4452 | ||
61012eef | 4453 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
4454 | { |
4455 | ptr += 5; | |
4456 | while (*ptr && *ptr != ';') | |
4457 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 4458 | |
31d99776 DJ |
4459 | if (bss_addr != data_addr) |
4460 | warning (_("Target reported unsupported offsets: %s"), buf); | |
4461 | } | |
4462 | else | |
4463 | lose = 1; | |
4464 | } | |
61012eef | 4465 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 4466 | { |
31d99776 DJ |
4467 | ptr += 8; |
4468 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 4469 | while (*ptr && *ptr != ';') |
31d99776 DJ |
4470 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
4471 | num_segments = 1; | |
4472 | ||
61012eef | 4473 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
4474 | { |
4475 | ptr += 9; | |
4476 | while (*ptr && *ptr != ';') | |
4477 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
4478 | num_segments++; | |
4479 | } | |
c906108c SS |
4480 | } |
4481 | else | |
4482 | lose = 1; | |
4483 | ||
4484 | if (lose) | |
8a3fe4f8 | 4485 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
4486 | else if (*ptr != '\0') |
4487 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 4488 | |
a42d7dd8 TT |
4489 | objfile *objf = current_program_space->symfile_object_file; |
4490 | section_offsets offs = objf->section_offsets; | |
c906108c | 4491 | |
98badbfd | 4492 | symfile_segment_data_up data = get_symfile_segment_data (objf->obfd.get ()); |
31d99776 DJ |
4493 | do_segments = (data != NULL); |
4494 | do_sections = num_segments == 0; | |
c906108c | 4495 | |
28c32713 | 4496 | if (num_segments > 0) |
31d99776 | 4497 | { |
31d99776 DJ |
4498 | segments[0] = text_addr; |
4499 | segments[1] = data_addr; | |
4500 | } | |
28c32713 JB |
4501 | /* If we have two segments, we can still try to relocate everything |
4502 | by assuming that the .text and .data offsets apply to the whole | |
4503 | text and data segments. Convert the offsets given in the packet | |
4504 | to base addresses for symfile_map_offsets_to_segments. */ | |
68b888ff | 4505 | else if (data != nullptr && data->segments.size () == 2) |
28c32713 | 4506 | { |
68b888ff SM |
4507 | segments[0] = data->segments[0].base + text_addr; |
4508 | segments[1] = data->segments[1].base + data_addr; | |
28c32713 JB |
4509 | num_segments = 2; |
4510 | } | |
8d385431 DJ |
4511 | /* If the object file has only one segment, assume that it is text |
4512 | rather than data; main programs with no writable data are rare, | |
4513 | but programs with no code are useless. Of course the code might | |
4514 | have ended up in the data segment... to detect that we would need | |
4515 | the permissions here. */ | |
68b888ff | 4516 | else if (data && data->segments.size () == 1) |
8d385431 | 4517 | { |
68b888ff | 4518 | segments[0] = data->segments[0].base + text_addr; |
8d385431 DJ |
4519 | num_segments = 1; |
4520 | } | |
28c32713 JB |
4521 | /* There's no way to relocate by segment. */ |
4522 | else | |
4523 | do_segments = 0; | |
31d99776 DJ |
4524 | |
4525 | if (do_segments) | |
4526 | { | |
98badbfd | 4527 | int ret = symfile_map_offsets_to_segments (objf->obfd.get (), |
62982abd SM |
4528 | data.get (), offs, |
4529 | num_segments, segments); | |
31d99776 DJ |
4530 | |
4531 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
4532 | error (_("Can not handle qOffsets TextSeg " |
4533 | "response with this symbol file")); | |
31d99776 DJ |
4534 | |
4535 | if (ret > 0) | |
4536 | do_sections = 0; | |
4537 | } | |
c906108c | 4538 | |
31d99776 DJ |
4539 | if (do_sections) |
4540 | { | |
a42d7dd8 | 4541 | offs[SECT_OFF_TEXT (objf)] = text_addr; |
31d99776 | 4542 | |
3e43a32a MS |
4543 | /* This is a temporary kludge to force data and bss to use the |
4544 | same offsets because that's what nlmconv does now. The real | |
4545 | solution requires changes to the stub and remote.c that I | |
4546 | don't have time to do right now. */ | |
31d99776 | 4547 | |
a42d7dd8 TT |
4548 | offs[SECT_OFF_DATA (objf)] = data_addr; |
4549 | offs[SECT_OFF_BSS (objf)] = data_addr; | |
31d99776 | 4550 | } |
c906108c | 4551 | |
a42d7dd8 | 4552 | objfile_relocate (objf, offs); |
c906108c SS |
4553 | } |
4554 | ||
9a7071a8 | 4555 | /* Send interrupt_sequence to remote target. */ |
6b8edb51 PA |
4556 | |
4557 | void | |
4558 | remote_target::send_interrupt_sequence () | |
9a7071a8 | 4559 | { |
5d93a237 TT |
4560 | struct remote_state *rs = get_remote_state (); |
4561 | ||
9a7071a8 | 4562 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 4563 | remote_serial_write ("\x03", 1); |
9a7071a8 | 4564 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 4565 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
4566 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
4567 | { | |
5d93a237 | 4568 | serial_send_break (rs->remote_desc); |
c33e31fd | 4569 | remote_serial_write ("g", 1); |
9a7071a8 JB |
4570 | } |
4571 | else | |
f34652de | 4572 | internal_error (_("Invalid value for interrupt_sequence_mode: %s."), |
9a7071a8 JB |
4573 | interrupt_sequence_mode); |
4574 | } | |
4575 | ||
3405876a PA |
4576 | |
4577 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
4578 | and extract the PTID. Returns NULL_PTID if not found. */ | |
4579 | ||
4580 | static ptid_t | |
e3b2741b | 4581 | stop_reply_extract_thread (const char *stop_reply) |
3405876a PA |
4582 | { |
4583 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
4584 | { | |
256642e8 | 4585 | const char *p; |
3405876a PA |
4586 | |
4587 | /* Txx r:val ; r:val (...) */ | |
4588 | p = &stop_reply[3]; | |
4589 | ||
4590 | /* Look for "register" named "thread". */ | |
4591 | while (*p != '\0') | |
4592 | { | |
256642e8 | 4593 | const char *p1; |
3405876a PA |
4594 | |
4595 | p1 = strchr (p, ':'); | |
4596 | if (p1 == NULL) | |
4597 | return null_ptid; | |
4598 | ||
4599 | if (strncmp (p, "thread", p1 - p) == 0) | |
4600 | return read_ptid (++p1, &p); | |
4601 | ||
4602 | p1 = strchr (p, ';'); | |
4603 | if (p1 == NULL) | |
4604 | return null_ptid; | |
4605 | p1++; | |
4606 | ||
4607 | p = p1; | |
4608 | } | |
4609 | } | |
4610 | ||
4611 | return null_ptid; | |
4612 | } | |
4613 | ||
b7ea362b PA |
4614 | /* Determine the remote side's current thread. If we have a stop |
4615 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
4616 | "thread" register we can extract the current thread from. If not, | |
4617 | ask the remote which is the current thread with qC. The former | |
4618 | method avoids a roundtrip. */ | |
4619 | ||
6b8edb51 | 4620 | ptid_t |
e3b2741b | 4621 | remote_target::get_current_thread (const char *wait_status) |
b7ea362b | 4622 | { |
6a49a997 | 4623 | ptid_t ptid = null_ptid; |
b7ea362b PA |
4624 | |
4625 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
4626 | the target architecture, which we haven't yet fully determined at | |
4627 | this point. */ | |
4628 | if (wait_status != NULL) | |
4629 | ptid = stop_reply_extract_thread (wait_status); | |
d7e15655 | 4630 | if (ptid == null_ptid) |
b7ea362b PA |
4631 | ptid = remote_current_thread (inferior_ptid); |
4632 | ||
4633 | return ptid; | |
4634 | } | |
4635 | ||
49c62f2e PA |
4636 | /* Query the remote target for which is the current thread/process, |
4637 | add it to our tables, and update INFERIOR_PTID. The caller is | |
4638 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
4639 | to return the current thread. |
4640 | ||
4641 | This function is called after handling the '?' or 'vRun' packets, | |
4642 | whose response is a stop reply from which we can also try | |
4643 | extracting the thread. If the target doesn't support the explicit | |
4644 | qC query, we infer the current thread from that stop reply, passed | |
64d38fdd | 4645 | in in WAIT_STATUS, which may be NULL. |
49c62f2e | 4646 | |
64d38fdd JM |
4647 | The function returns pointer to the main thread of the inferior. */ |
4648 | ||
4649 | thread_info * | |
e3b2741b | 4650 | remote_target::add_current_inferior_and_thread (const char *wait_status) |
49c62f2e | 4651 | { |
9ab8741a | 4652 | bool fake_pid_p = false; |
49c62f2e | 4653 | |
0ac55310 | 4654 | switch_to_no_thread (); |
49c62f2e | 4655 | |
0ac55310 PA |
4656 | /* Now, if we have thread information, update the current thread's |
4657 | ptid. */ | |
87215ad1 | 4658 | ptid_t curr_ptid = get_current_thread (wait_status); |
3405876a | 4659 | |
87215ad1 | 4660 | if (curr_ptid != null_ptid) |
49c62f2e | 4661 | { |
ff52c073 | 4662 | if (!m_features.remote_multi_process_p ()) |
9ab8741a | 4663 | fake_pid_p = true; |
49c62f2e PA |
4664 | } |
4665 | else | |
4666 | { | |
4667 | /* Without this, some commands which require an active target | |
4668 | (such as kill) won't work. This variable serves (at least) | |
4669 | double duty as both the pid of the target process (if it has | |
4670 | such), and as a flag indicating that a target is active. */ | |
87215ad1 | 4671 | curr_ptid = magic_null_ptid; |
9ab8741a | 4672 | fake_pid_p = true; |
49c62f2e PA |
4673 | } |
4674 | ||
e99b03dc | 4675 | remote_add_inferior (fake_pid_p, curr_ptid.pid (), -1, 1); |
49c62f2e | 4676 | |
87215ad1 SDJ |
4677 | /* Add the main thread and switch to it. Don't try reading |
4678 | registers yet, since we haven't fetched the target description | |
4679 | yet. */ | |
5b6d1e4f | 4680 | thread_info *tp = add_thread_silent (this, curr_ptid); |
87215ad1 | 4681 | switch_to_thread_no_regs (tp); |
64d38fdd JM |
4682 | |
4683 | return tp; | |
49c62f2e PA |
4684 | } |
4685 | ||
6efcd9a8 PA |
4686 | /* Print info about a thread that was found already stopped on |
4687 | connection. */ | |
4688 | ||
1edb66d8 SM |
4689 | void |
4690 | remote_target::print_one_stopped_thread (thread_info *thread) | |
6efcd9a8 | 4691 | { |
1edb66d8 SM |
4692 | target_waitstatus ws; |
4693 | ||
4694 | /* If there is a pending waitstatus, use it. If there isn't it's because | |
4695 | the thread's stop was reported with TARGET_WAITKIND_STOPPED / GDB_SIGNAL_0 | |
4696 | and process_initial_stop_replies decided it wasn't interesting to save | |
4697 | and report to the core. */ | |
4698 | if (thread->has_pending_waitstatus ()) | |
4699 | { | |
4700 | ws = thread->pending_waitstatus (); | |
4701 | thread->clear_pending_waitstatus (); | |
4702 | } | |
4703 | else | |
4704 | { | |
183be222 | 4705 | ws.set_stopped (GDB_SIGNAL_0); |
1edb66d8 | 4706 | } |
6efcd9a8 | 4707 | |
00431a78 | 4708 | switch_to_thread (thread); |
1edb66d8 | 4709 | thread->set_stop_pc (get_frame_pc (get_current_frame ())); |
6efcd9a8 PA |
4710 | set_current_sal_from_frame (get_current_frame ()); |
4711 | ||
1edb66d8 SM |
4712 | /* For "info program". */ |
4713 | set_last_target_status (this, thread->ptid, ws); | |
6efcd9a8 | 4714 | |
183be222 | 4715 | if (ws.kind () == TARGET_WAITKIND_STOPPED) |
6efcd9a8 | 4716 | { |
183be222 | 4717 | enum gdb_signal sig = ws.sig (); |
6efcd9a8 PA |
4718 | |
4719 | if (signal_print_state (sig)) | |
3f75a984 | 4720 | notify_signal_received (sig); |
6efcd9a8 | 4721 | } |
87829267 SM |
4722 | |
4723 | notify_normal_stop (nullptr, 1); | |
6efcd9a8 PA |
4724 | } |
4725 | ||
221e1a37 PA |
4726 | /* Process all initial stop replies the remote side sent in response |
4727 | to the ? packet. These indicate threads that were already stopped | |
4728 | on initial connection. We mark these threads as stopped and print | |
4729 | their current frame before giving the user the prompt. */ | |
4730 | ||
6b8edb51 PA |
4731 | void |
4732 | remote_target::process_initial_stop_replies (int from_tty) | |
221e1a37 PA |
4733 | { |
4734 | int pending_stop_replies = stop_reply_queue_length (); | |
6efcd9a8 PA |
4735 | struct thread_info *selected = NULL; |
4736 | struct thread_info *lowest_stopped = NULL; | |
4737 | struct thread_info *first = NULL; | |
221e1a37 | 4738 | |
1edb66d8 SM |
4739 | /* This is only used when the target is non-stop. */ |
4740 | gdb_assert (target_is_non_stop_p ()); | |
4741 | ||
221e1a37 PA |
4742 | /* Consume the initial pending events. */ |
4743 | while (pending_stop_replies-- > 0) | |
4744 | { | |
4745 | ptid_t waiton_ptid = minus_one_ptid; | |
4746 | ptid_t event_ptid; | |
4747 | struct target_waitstatus ws; | |
4748 | int ignore_event = 0; | |
4749 | ||
221e1a37 PA |
4750 | event_ptid = target_wait (waiton_ptid, &ws, TARGET_WNOHANG); |
4751 | if (remote_debug) | |
c272a98c | 4752 | print_target_wait_results (waiton_ptid, event_ptid, ws); |
221e1a37 | 4753 | |
183be222 | 4754 | switch (ws.kind ()) |
221e1a37 PA |
4755 | { |
4756 | case TARGET_WAITKIND_IGNORE: | |
4757 | case TARGET_WAITKIND_NO_RESUMED: | |
4758 | case TARGET_WAITKIND_SIGNALLED: | |
4759 | case TARGET_WAITKIND_EXITED: | |
4760 | /* We shouldn't see these, but if we do, just ignore. */ | |
2189c312 | 4761 | remote_debug_printf ("event ignored"); |
221e1a37 PA |
4762 | ignore_event = 1; |
4763 | break; | |
4764 | ||
221e1a37 PA |
4765 | default: |
4766 | break; | |
4767 | } | |
4768 | ||
4769 | if (ignore_event) | |
4770 | continue; | |
4771 | ||
9213a6d7 | 4772 | thread_info *evthread = this->find_thread (event_ptid); |
221e1a37 | 4773 | |
183be222 | 4774 | if (ws.kind () == TARGET_WAITKIND_STOPPED) |
221e1a37 | 4775 | { |
183be222 | 4776 | enum gdb_signal sig = ws.sig (); |
221e1a37 PA |
4777 | |
4778 | /* Stubs traditionally report SIGTRAP as initial signal, | |
4779 | instead of signal 0. Suppress it. */ | |
4780 | if (sig == GDB_SIGNAL_TRAP) | |
4781 | sig = GDB_SIGNAL_0; | |
1edb66d8 | 4782 | evthread->set_stop_signal (sig); |
183be222 | 4783 | ws.set_stopped (sig); |
6efcd9a8 | 4784 | } |
221e1a37 | 4785 | |
183be222 SM |
4786 | if (ws.kind () != TARGET_WAITKIND_STOPPED |
4787 | || ws.sig () != GDB_SIGNAL_0) | |
1edb66d8 | 4788 | evthread->set_pending_waitstatus (ws); |
6efcd9a8 | 4789 | |
719546c4 SM |
4790 | set_executing (this, event_ptid, false); |
4791 | set_running (this, event_ptid, false); | |
c9d22089 | 4792 | get_remote_thread_info (evthread)->set_not_resumed (); |
6efcd9a8 PA |
4793 | } |
4794 | ||
4795 | /* "Notice" the new inferiors before anything related to | |
4796 | registers/memory. */ | |
5b6d1e4f | 4797 | for (inferior *inf : all_non_exited_inferiors (this)) |
6efcd9a8 | 4798 | { |
30220b46 | 4799 | inf->needs_setup = true; |
6efcd9a8 PA |
4800 | |
4801 | if (non_stop) | |
4802 | { | |
08036331 | 4803 | thread_info *thread = any_live_thread_of_inferior (inf); |
00431a78 | 4804 | notice_new_inferior (thread, thread->state == THREAD_RUNNING, |
6efcd9a8 PA |
4805 | from_tty); |
4806 | } | |
4807 | } | |
4808 | ||
4809 | /* If all-stop on top of non-stop, pause all threads. Note this | |
4810 | records the threads' stop pc, so must be done after "noticing" | |
4811 | the inferiors. */ | |
4812 | if (!non_stop) | |
4813 | { | |
abe8cab7 SM |
4814 | { |
4815 | /* At this point, the remote target is not async. It needs to be for | |
4816 | the poll in stop_all_threads to consider events from it, so enable | |
4817 | it temporarily. */ | |
4818 | gdb_assert (!this->is_async_p ()); | |
4a570176 TT |
4819 | SCOPE_EXIT { target_async (false); }; |
4820 | target_async (true); | |
4f5539f0 | 4821 | stop_all_threads ("remote connect in all-stop"); |
abe8cab7 | 4822 | } |
6efcd9a8 PA |
4823 | |
4824 | /* If all threads of an inferior were already stopped, we | |
4825 | haven't setup the inferior yet. */ | |
5b6d1e4f | 4826 | for (inferior *inf : all_non_exited_inferiors (this)) |
6efcd9a8 | 4827 | { |
6efcd9a8 PA |
4828 | if (inf->needs_setup) |
4829 | { | |
08036331 | 4830 | thread_info *thread = any_live_thread_of_inferior (inf); |
6efcd9a8 PA |
4831 | switch_to_thread_no_regs (thread); |
4832 | setup_inferior (0); | |
4833 | } | |
4834 | } | |
221e1a37 | 4835 | } |
6efcd9a8 PA |
4836 | |
4837 | /* Now go over all threads that are stopped, and print their current | |
4838 | frame. If all-stop, then if there's a signalled thread, pick | |
4839 | that as current. */ | |
5b6d1e4f | 4840 | for (thread_info *thread : all_non_exited_threads (this)) |
6efcd9a8 | 4841 | { |
6efcd9a8 PA |
4842 | if (first == NULL) |
4843 | first = thread; | |
4844 | ||
4845 | if (!non_stop) | |
00431a78 | 4846 | thread->set_running (false); |
6efcd9a8 PA |
4847 | else if (thread->state != THREAD_STOPPED) |
4848 | continue; | |
4849 | ||
1edb66d8 | 4850 | if (selected == nullptr && thread->has_pending_waitstatus ()) |
6efcd9a8 PA |
4851 | selected = thread; |
4852 | ||
5d5658a1 PA |
4853 | if (lowest_stopped == NULL |
4854 | || thread->inf->num < lowest_stopped->inf->num | |
4855 | || thread->per_inf_num < lowest_stopped->per_inf_num) | |
6efcd9a8 PA |
4856 | lowest_stopped = thread; |
4857 | ||
4858 | if (non_stop) | |
4859 | print_one_stopped_thread (thread); | |
4860 | } | |
4861 | ||
4862 | /* In all-stop, we only print the status of one thread, and leave | |
4863 | others with their status pending. */ | |
4864 | if (!non_stop) | |
4865 | { | |
08036331 | 4866 | thread_info *thread = selected; |
6efcd9a8 PA |
4867 | if (thread == NULL) |
4868 | thread = lowest_stopped; | |
4869 | if (thread == NULL) | |
4870 | thread = first; | |
4871 | ||
4872 | print_one_stopped_thread (thread); | |
4873 | } | |
221e1a37 PA |
4874 | } |
4875 | ||
45664f16 | 4876 | /* Mark a remote_target as starting (by setting the starting_up flag within |
7a34f66b AB |
4877 | its remote_state) for the lifetime of this object. The reference count |
4878 | on the remote target is temporarily incremented, to prevent the target | |
4879 | being deleted under our feet. */ | |
4880 | ||
4881 | struct scoped_mark_target_starting | |
4882 | { | |
4883 | /* Constructor, TARGET is the target to be marked as starting, its | |
4884 | reference count will be incremented. */ | |
4885 | scoped_mark_target_starting (remote_target *target) | |
45664f16 AB |
4886 | : m_remote_target (remote_target_ref::new_reference (target)), |
4887 | m_restore_starting_up (set_starting_up_flag (target)) | |
4888 | { /* Nothing. */ } | |
4889 | ||
4890 | private: | |
7a34f66b | 4891 | |
45664f16 AB |
4892 | /* Helper function, set the starting_up flag on TARGET and return an |
4893 | object which, when it goes out of scope, will restore the previous | |
4894 | value of the starting_up flag. */ | |
4895 | static scoped_restore_tmpl<bool> | |
4896 | set_starting_up_flag (remote_target *target) | |
7a34f66b | 4897 | { |
45664f16 AB |
4898 | remote_state *rs = target->get_remote_state (); |
4899 | gdb_assert (!rs->starting_up); | |
4900 | return make_scoped_restore (&rs->starting_up, true); | |
7a34f66b AB |
4901 | } |
4902 | ||
45664f16 AB |
4903 | /* A gdb::ref_ptr pointer to a remote_target. */ |
4904 | using remote_target_ref = gdb::ref_ptr<remote_target, target_ops_ref_policy>; | |
4905 | ||
4906 | /* A reference to the target on which we are operating. */ | |
4907 | remote_target_ref m_remote_target; | |
7a34f66b | 4908 | |
45664f16 AB |
4909 | /* An object which restores the previous value of the starting_up flag |
4910 | when it goes out of scope. */ | |
4911 | scoped_restore_tmpl<bool> m_restore_starting_up; | |
7a34f66b AB |
4912 | }; |
4913 | ||
288712bb AB |
4914 | /* Helper for remote_target::start_remote, start the remote connection and |
4915 | sync state. Return true if everything goes OK, otherwise, return false. | |
4916 | This function exists so that the scoped_restore created within it will | |
4917 | expire before we return to remote_target::start_remote. */ | |
048094ac | 4918 | |
288712bb AB |
4919 | bool |
4920 | remote_target::start_remote_1 (int from_tty, int extended_p) | |
c906108c | 4921 | { |
2189c312 SM |
4922 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
4923 | ||
c8d104ad | 4924 | struct remote_state *rs = get_remote_state (); |
8621d6a9 | 4925 | |
048094ac PA |
4926 | /* Signal other parts that we're going through the initial setup, |
4927 | and so things may not be stable yet. E.g., we don't try to | |
4928 | install tracepoints until we've relocated symbols. Also, a | |
4929 | Ctrl-C before we're connected and synced up can't interrupt the | |
4930 | target. Instead, it offers to drop the (potentially wedged) | |
4931 | connection. */ | |
7a34f66b | 4932 | scoped_mark_target_starting target_is_starting (this); |
048094ac | 4933 | |
522002f9 | 4934 | QUIT; |
c906108c | 4935 | |
9a7071a8 JB |
4936 | if (interrupt_on_connect) |
4937 | send_interrupt_sequence (); | |
4938 | ||
57e12211 | 4939 | /* Ack any packet which the remote side has already sent. */ |
048094ac | 4940 | remote_serial_write ("+", 1); |
1e51243a | 4941 | |
c8d104ad PA |
4942 | /* The first packet we send to the target is the optional "supported |
4943 | packets" request. If the target can answer this, it will tell us | |
4944 | which later probes to skip. */ | |
4945 | remote_query_supported (); | |
4946 | ||
34f0de5a CS |
4947 | /* Check vCont support and set the remote state's vCont_action_support |
4948 | attribute. */ | |
4949 | remote_vcont_probe (); | |
4950 | ||
d914c394 | 4951 | /* If the stub wants to get a QAllow, compose one and send it. */ |
ff52c073 | 4952 | if (m_features.packet_support (PACKET_QAllow) != PACKET_DISABLE) |
f6ac5f3d | 4953 | set_permissions (); |
d914c394 | 4954 | |
57809e5e JK |
4955 | /* gdbserver < 7.7 (before its fix from 2013-12-11) did reply to any |
4956 | unknown 'v' packet with string "OK". "OK" gets interpreted by GDB | |
4957 | as a reply to known packet. For packet "vFile:setfs:" it is an | |
4958 | invalid reply and GDB would return error in | |
4959 | remote_hostio_set_filesystem, making remote files access impossible. | |
4960 | Disable "vFile:setfs:" in such case. Do not disable other 'v' packets as | |
4961 | other "vFile" packets get correctly detected even on gdbserver < 7.7. */ | |
4962 | { | |
4963 | const char v_mustreplyempty[] = "vMustReplyEmpty"; | |
4964 | ||
4965 | putpkt (v_mustreplyempty); | |
8d64371b TT |
4966 | getpkt (&rs->buf, 0); |
4967 | if (strcmp (rs->buf.data (), "OK") == 0) | |
ff52c073 CS |
4968 | { |
4969 | m_features.m_protocol_packets[PACKET_vFile_setfs].support | |
4970 | = PACKET_DISABLE; | |
4971 | } | |
8d64371b | 4972 | else if (strcmp (rs->buf.data (), "") != 0) |
57809e5e | 4973 | error (_("Remote replied unexpectedly to '%s': %s"), v_mustreplyempty, |
8d64371b | 4974 | rs->buf.data ()); |
57809e5e JK |
4975 | } |
4976 | ||
c8d104ad PA |
4977 | /* Next, we possibly activate noack mode. |
4978 | ||
4979 | If the QStartNoAckMode packet configuration is set to AUTO, | |
4980 | enable noack mode if the stub reported a wish for it with | |
4981 | qSupported. | |
4982 | ||
4983 | If set to TRUE, then enable noack mode even if the stub didn't | |
4984 | report it in qSupported. If the stub doesn't reply OK, the | |
4985 | session ends with an error. | |
4986 | ||
4987 | If FALSE, then don't activate noack mode, regardless of what the | |
4988 | stub claimed should be the default with qSupported. */ | |
4989 | ||
ff52c073 | 4990 | if (m_features.packet_support (PACKET_QStartNoAckMode) != PACKET_DISABLE) |
c8d104ad PA |
4991 | { |
4992 | putpkt ("QStartNoAckMode"); | |
8d64371b | 4993 | getpkt (&rs->buf, 0); |
ff52c073 | 4994 | if (m_features.packet_ok (rs->buf, PACKET_QStartNoAckMode) == PACKET_OK) |
c8d104ad PA |
4995 | rs->noack_mode = 1; |
4996 | } | |
4997 | ||
04bd08de | 4998 | if (extended_p) |
5fe04517 PA |
4999 | { |
5000 | /* Tell the remote that we are using the extended protocol. */ | |
5001 | putpkt ("!"); | |
8d64371b | 5002 | getpkt (&rs->buf, 0); |
5fe04517 PA |
5003 | } |
5004 | ||
9b224c5e PA |
5005 | /* Let the target know which signals it is allowed to pass down to |
5006 | the program. */ | |
5007 | update_signals_program_target (); | |
5008 | ||
d962ef82 DJ |
5009 | /* Next, if the target can specify a description, read it. We do |
5010 | this before anything involving memory or registers. */ | |
5011 | target_find_description (); | |
5012 | ||
6c95b8df PA |
5013 | /* Next, now that we know something about the target, update the |
5014 | address spaces in the program spaces. */ | |
5015 | update_address_spaces (); | |
5016 | ||
50c71eaf PA |
5017 | /* On OSs where the list of libraries is global to all |
5018 | processes, we fetch them early. */ | |
f5656ead | 5019 | if (gdbarch_has_global_solist (target_gdbarch ())) |
e696b3ad | 5020 | solib_add (NULL, from_tty, auto_solib_add); |
50c71eaf | 5021 | |
6efcd9a8 | 5022 | if (target_is_non_stop_p ()) |
74531fed | 5023 | { |
ff52c073 | 5024 | if (m_features.packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
5025 | error (_("Non-stop mode requested, but remote " |
5026 | "does not support non-stop")); | |
74531fed PA |
5027 | |
5028 | putpkt ("QNonStop:1"); | |
8d64371b | 5029 | getpkt (&rs->buf, 0); |
74531fed | 5030 | |
8d64371b TT |
5031 | if (strcmp (rs->buf.data (), "OK") != 0) |
5032 | error (_("Remote refused setting non-stop mode with: %s"), | |
5033 | rs->buf.data ()); | |
74531fed PA |
5034 | |
5035 | /* Find about threads and processes the stub is already | |
5036 | controlling. We default to adding them in the running state. | |
5037 | The '?' query below will then tell us about which threads are | |
5038 | stopped. */ | |
f6ac5f3d | 5039 | this->update_thread_list (); |
74531fed | 5040 | } |
ff52c073 | 5041 | else if (m_features.packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
5042 | { |
5043 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 5044 | Request it explicitly. */ |
74531fed | 5045 | putpkt ("QNonStop:0"); |
8d64371b | 5046 | getpkt (&rs->buf, 0); |
74531fed | 5047 | |
8d64371b TT |
5048 | if (strcmp (rs->buf.data (), "OK") != 0) |
5049 | error (_("Remote refused setting all-stop mode with: %s"), | |
5050 | rs->buf.data ()); | |
74531fed PA |
5051 | } |
5052 | ||
a0743c90 YQ |
5053 | /* Upload TSVs regardless of whether the target is running or not. The |
5054 | remote stub, such as GDBserver, may have some predefined or builtin | |
5055 | TSVs, even if the target is not running. */ | |
f6ac5f3d | 5056 | if (get_trace_status (current_trace_status ()) != -1) |
a0743c90 YQ |
5057 | { |
5058 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
5059 | ||
f6ac5f3d | 5060 | upload_trace_state_variables (&uploaded_tsvs); |
a0743c90 YQ |
5061 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
5062 | } | |
5063 | ||
2d717e4f DJ |
5064 | /* Check whether the target is running now. */ |
5065 | putpkt ("?"); | |
8d64371b | 5066 | getpkt (&rs->buf, 0); |
2d717e4f | 5067 | |
6efcd9a8 | 5068 | if (!target_is_non_stop_p ()) |
2d717e4f | 5069 | { |
b5c8f22d SM |
5070 | char *wait_status = NULL; |
5071 | ||
74531fed | 5072 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 5073 | { |
04bd08de | 5074 | if (!extended_p) |
74531fed | 5075 | error (_("The target is not running (try extended-remote?)")); |
288712bb | 5076 | return false; |
2d717e4f DJ |
5077 | } |
5078 | else | |
74531fed | 5079 | { |
74531fed | 5080 | /* Save the reply for later. */ |
8d64371b TT |
5081 | wait_status = (char *) alloca (strlen (rs->buf.data ()) + 1); |
5082 | strcpy (wait_status, rs->buf.data ()); | |
74531fed PA |
5083 | } |
5084 | ||
b7ea362b | 5085 | /* Fetch thread list. */ |
e8032dde | 5086 | target_update_thread_list (); |
b7ea362b | 5087 | |
74531fed PA |
5088 | /* Let the stub know that we want it to return the thread. */ |
5089 | set_continue_thread (minus_one_ptid); | |
5090 | ||
5b6d1e4f | 5091 | if (thread_count (this) == 0) |
b7ea362b PA |
5092 | { |
5093 | /* Target has no concept of threads at all. GDB treats | |
5094 | non-threaded target as single-threaded; add a main | |
5095 | thread. */ | |
64d38fdd JM |
5096 | thread_info *tp = add_current_inferior_and_thread (wait_status); |
5097 | get_remote_thread_info (tp)->set_resumed (); | |
b7ea362b PA |
5098 | } |
5099 | else | |
5100 | { | |
5101 | /* We have thread information; select the thread the target | |
5102 | says should be current. If we're reconnecting to a | |
5103 | multi-threaded program, this will ideally be the thread | |
5104 | that last reported an event before GDB disconnected. */ | |
75c6c844 PA |
5105 | ptid_t curr_thread = get_current_thread (wait_status); |
5106 | if (curr_thread == null_ptid) | |
b7ea362b PA |
5107 | { |
5108 | /* Odd... The target was able to list threads, but not | |
5109 | tell us which thread was current (no "thread" | |
5110 | register in T stop reply?). Just pick the first | |
5111 | thread in the thread list then. */ | |
2189c312 SM |
5112 | |
5113 | remote_debug_printf ("warning: couldn't determine remote " | |
5114 | "current thread; picking first in list."); | |
c9f35b34 | 5115 | |
5b6d1e4f PA |
5116 | for (thread_info *tp : all_non_exited_threads (this, |
5117 | minus_one_ptid)) | |
75c6c844 PA |
5118 | { |
5119 | switch_to_thread (tp); | |
5120 | break; | |
5121 | } | |
b7ea362b | 5122 | } |
75c6c844 | 5123 | else |
9213a6d7 | 5124 | switch_to_thread (this->find_thread (curr_thread)); |
b7ea362b | 5125 | } |
74531fed | 5126 | |
6e586cc5 YQ |
5127 | /* init_wait_for_inferior should be called before get_offsets in order |
5128 | to manage `inserted' flag in bp loc in a correct state. | |
5129 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
5130 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
5131 | start_remote, set `inserted' flag to 1. In the initialization of | |
5132 | inferior, breakpoint_init_inferior should be called first, and then | |
5133 | breakpoint_re_set can be called. If this order is broken, state of | |
5134 | `inserted' flag is wrong, and cause some problems on breakpoint | |
5135 | manipulation. */ | |
5136 | init_wait_for_inferior (); | |
5137 | ||
74531fed PA |
5138 | get_offsets (); /* Get text, data & bss offsets. */ |
5139 | ||
d962ef82 DJ |
5140 | /* If we could not find a description using qXfer, and we know |
5141 | how to do it some other way, try again. This is not | |
5142 | supported for non-stop; it could be, but it is tricky if | |
5143 | there are no stopped threads when we connect. */ | |
f6ac5f3d | 5144 | if (remote_read_description_p (this) |
f5656ead | 5145 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
5146 | { |
5147 | target_clear_description (); | |
5148 | target_find_description (); | |
5149 | } | |
5150 | ||
74531fed PA |
5151 | /* Use the previously fetched status. */ |
5152 | gdb_assert (wait_status != NULL); | |
4f626cad AB |
5153 | struct notif_event *reply |
5154 | = remote_notif_parse (this, ¬if_client_stop, wait_status); | |
5155 | push_stop_reply ((struct stop_reply *) reply); | |
74531fed | 5156 | |
f6ac5f3d | 5157 | ::start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
5158 | } |
5159 | else | |
5160 | { | |
68c97600 PA |
5161 | /* Clear WFI global state. Do this before finding about new |
5162 | threads and inferiors, and setting the current inferior. | |
5163 | Otherwise we would clear the proceed status of the current | |
5164 | inferior when we want its stop_soon state to be preserved | |
5165 | (see notice_new_inferior). */ | |
5166 | init_wait_for_inferior (); | |
5167 | ||
74531fed PA |
5168 | /* In non-stop, we will either get an "OK", meaning that there |
5169 | are no stopped threads at this time; or, a regular stop | |
5170 | reply. In the latter case, there may be more than one thread | |
5171 | stopped --- we pull them all out using the vStopped | |
5172 | mechanism. */ | |
8d64371b | 5173 | if (strcmp (rs->buf.data (), "OK") != 0) |
74531fed | 5174 | { |
42938c1a | 5175 | const notif_client *notif = ¬if_client_stop; |
2d717e4f | 5176 | |
722247f1 YQ |
5177 | /* remote_notif_get_pending_replies acks this one, and gets |
5178 | the rest out. */ | |
f48ff2a7 | 5179 | rs->notif_state->pending_event[notif_client_stop.id] |
8d64371b | 5180 | = remote_notif_parse (this, notif, rs->buf.data ()); |
722247f1 | 5181 | remote_notif_get_pending_events (notif); |
74531fed | 5182 | } |
2d717e4f | 5183 | |
5b6d1e4f | 5184 | if (thread_count (this) == 0) |
74531fed | 5185 | { |
04bd08de | 5186 | if (!extended_p) |
74531fed | 5187 | error (_("The target is not running (try extended-remote?)")); |
288712bb | 5188 | return false; |
c35b1492 | 5189 | } |
74531fed | 5190 | |
2455069d | 5191 | /* Report all signals during attach/startup. */ |
adc6a863 | 5192 | pass_signals ({}); |
221e1a37 PA |
5193 | |
5194 | /* If there are already stopped threads, mark them stopped and | |
5195 | report their stops before giving the prompt to the user. */ | |
6efcd9a8 | 5196 | process_initial_stop_replies (from_tty); |
221e1a37 PA |
5197 | |
5198 | if (target_can_async_p ()) | |
4a570176 | 5199 | target_async (true); |
74531fed | 5200 | } |
c8d104ad | 5201 | |
901e4e8d SM |
5202 | /* Give the target a chance to look up symbols. */ |
5203 | for (inferior *inf : all_inferiors (this)) | |
c8d104ad | 5204 | { |
901e4e8d SM |
5205 | /* The inferiors that exist at this point were created from what |
5206 | was found already running on the remote side, so we know they | |
5207 | have execution. */ | |
5208 | gdb_assert (this->has_execution (inf)); | |
5209 | ||
a42d7dd8 | 5210 | /* No use without a symbol-file. */ |
901e4e8d SM |
5211 | if (inf->pspace->symfile_object_file == nullptr) |
5212 | continue; | |
5213 | ||
5214 | /* Need to switch to a specific thread, because remote_check_symbols | |
287de656 | 5215 | uses INFERIOR_PTID to set the general thread. */ |
901e4e8d SM |
5216 | scoped_restore_current_thread restore_thread; |
5217 | thread_info *thread = any_thread_of_inferior (inf); | |
5218 | switch_to_thread (thread); | |
5219 | this->remote_check_symbols (); | |
c8d104ad | 5220 | } |
50c71eaf | 5221 | |
d5551862 SS |
5222 | /* Possibly the target has been engaged in a trace run started |
5223 | previously; find out where things are at. */ | |
f6ac5f3d | 5224 | if (get_trace_status (current_trace_status ()) != -1) |
d5551862 | 5225 | { |
00bf0b85 | 5226 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 5227 | |
00bf0b85 | 5228 | if (current_trace_status ()->running) |
6cb06a8c | 5229 | gdb_printf (_("Trace is already running on the target.\n")); |
00bf0b85 | 5230 | |
f6ac5f3d | 5231 | upload_tracepoints (&uploaded_tps); |
00bf0b85 SS |
5232 | |
5233 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
5234 | } |
5235 | ||
c0272db5 TW |
5236 | /* Possibly the target has been engaged in a btrace record started |
5237 | previously; find out where things are at. */ | |
5238 | remote_btrace_maybe_reopen (); | |
5239 | ||
288712bb AB |
5240 | return true; |
5241 | } | |
5242 | ||
5243 | /* Start the remote connection and sync state. */ | |
1e51243a | 5244 | |
288712bb AB |
5245 | void |
5246 | remote_target::start_remote (int from_tty, int extended_p) | |
5247 | { | |
5248 | if (start_remote_1 (from_tty, extended_p) | |
5249 | && breakpoints_should_be_inserted_now ()) | |
50c71eaf | 5250 | insert_breakpoints (); |
c906108c SS |
5251 | } |
5252 | ||
121b3efd PA |
5253 | const char * |
5254 | remote_target::connection_string () | |
5255 | { | |
5256 | remote_state *rs = get_remote_state (); | |
5257 | ||
5258 | if (rs->remote_desc->name != NULL) | |
5259 | return rs->remote_desc->name; | |
5260 | else | |
5261 | return NULL; | |
5262 | } | |
5263 | ||
c906108c SS |
5264 | /* Open a connection to a remote debugger. |
5265 | NAME is the filename used for communication. */ | |
5266 | ||
f6ac5f3d PA |
5267 | void |
5268 | remote_target::open (const char *name, int from_tty) | |
c906108c | 5269 | { |
f6ac5f3d | 5270 | open_1 (name, from_tty, 0); |
43ff13b4 JM |
5271 | } |
5272 | ||
c906108c SS |
5273 | /* Open a connection to a remote debugger using the extended |
5274 | remote gdb protocol. NAME is the filename used for communication. */ | |
5275 | ||
f6ac5f3d PA |
5276 | void |
5277 | extended_remote_target::open (const char *name, int from_tty) | |
c906108c | 5278 | { |
f6ac5f3d | 5279 | open_1 (name, from_tty, 1 /*extended_p */); |
43ff13b4 JM |
5280 | } |
5281 | ||
ff52c073 CS |
5282 | void |
5283 | remote_features::reset_all_packet_configs_support () | |
d471ea57 AC |
5284 | { |
5285 | int i; | |
a744cf53 | 5286 | |
444abaca | 5287 | for (i = 0; i < PACKET_MAX; i++) |
ff52c073 | 5288 | m_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
5289 | } |
5290 | ||
ca4f7f8b PA |
5291 | /* Initialize all packet configs. */ |
5292 | ||
5293 | static void | |
5294 | init_all_packet_configs (void) | |
5295 | { | |
5296 | int i; | |
5297 | ||
5298 | for (i = 0; i < PACKET_MAX; i++) | |
5299 | { | |
5300 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
5301 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
5302 | } | |
5303 | } | |
5304 | ||
23860348 | 5305 | /* Symbol look-up. */ |
dc8acb97 | 5306 | |
6b8edb51 PA |
5307 | void |
5308 | remote_target::remote_check_symbols () | |
dc8acb97 | 5309 | { |
8d64371b | 5310 | char *tmp; |
dc8acb97 MS |
5311 | int end; |
5312 | ||
06c7226e SM |
5313 | /* It doesn't make sense to send a qSymbol packet for an inferior that |
5314 | doesn't have execution, because the remote side doesn't know about | |
5315 | inferiors without execution. */ | |
5316 | gdb_assert (target_has_execution ()); | |
63154eca | 5317 | |
ff52c073 | 5318 | if (m_features.packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
5319 | return; |
5320 | ||
63154eca PA |
5321 | /* Make sure the remote is pointing at the right process. Note |
5322 | there's no way to select "no process". */ | |
3c9c4b83 PA |
5323 | set_general_process (); |
5324 | ||
6d820c5c DJ |
5325 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
5326 | because we need both at the same time. */ | |
66644cd3 | 5327 | gdb::char_vector msg (get_remote_packet_size ()); |
8d64371b | 5328 | gdb::char_vector reply (get_remote_packet_size ()); |
6d820c5c | 5329 | |
23860348 | 5330 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
5331 | |
5332 | putpkt ("qSymbol::"); | |
8d64371b | 5333 | getpkt (&reply, 0); |
ff52c073 | 5334 | m_features.packet_ok (reply, PACKET_qSymbol); |
dc8acb97 | 5335 | |
8d64371b | 5336 | while (startswith (reply.data (), "qSymbol:")) |
dc8acb97 | 5337 | { |
77e371c0 TT |
5338 | struct bound_minimal_symbol sym; |
5339 | ||
dc8acb97 | 5340 | tmp = &reply[8]; |
66644cd3 AB |
5341 | end = hex2bin (tmp, reinterpret_cast <gdb_byte *> (msg.data ()), |
5342 | strlen (tmp) / 2); | |
dc8acb97 | 5343 | msg[end] = '\0'; |
66644cd3 | 5344 | sym = lookup_minimal_symbol (msg.data (), NULL, NULL); |
3b7344d5 | 5345 | if (sym.minsym == NULL) |
66644cd3 AB |
5346 | xsnprintf (msg.data (), get_remote_packet_size (), "qSymbol::%s", |
5347 | &reply[8]); | |
dc8acb97 | 5348 | else |
2bbe3cc1 | 5349 | { |
f5656ead | 5350 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
4aeddc50 | 5351 | CORE_ADDR sym_addr = sym.value_address (); |
2bbe3cc1 DJ |
5352 | |
5353 | /* If this is a function address, return the start of code | |
5354 | instead of any data function descriptor. */ | |
328d42d8 SM |
5355 | sym_addr = gdbarch_convert_from_func_ptr_addr |
5356 | (target_gdbarch (), sym_addr, current_inferior ()->top_target ()); | |
2bbe3cc1 | 5357 | |
66644cd3 | 5358 | xsnprintf (msg.data (), get_remote_packet_size (), "qSymbol:%s:%s", |
5af949e3 | 5359 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 | 5360 | } |
66644cd3 AB |
5361 | |
5362 | putpkt (msg.data ()); | |
8d64371b | 5363 | getpkt (&reply, 0); |
dc8acb97 MS |
5364 | } |
5365 | } | |
5366 | ||
9db8d71f | 5367 | static struct serial * |
baa336ce | 5368 | remote_serial_open (const char *name) |
9db8d71f DJ |
5369 | { |
5370 | static int udp_warning = 0; | |
5371 | ||
5372 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
5373 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
5374 | serial connection is reliable and not the serial connection promising | |
5375 | to be. */ | |
61012eef | 5376 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 5377 | { |
3e43a32a MS |
5378 | warning (_("The remote protocol may be unreliable over UDP.\n" |
5379 | "Some events may be lost, rendering further debugging " | |
5380 | "impossible.")); | |
9db8d71f DJ |
5381 | udp_warning = 1; |
5382 | } | |
5383 | ||
5384 | return serial_open (name); | |
5385 | } | |
5386 | ||
d914c394 SS |
5387 | /* Inform the target of our permission settings. The permission flags |
5388 | work without this, but if the target knows the settings, it can do | |
5389 | a couple things. First, it can add its own check, to catch cases | |
5390 | that somehow manage to get by the permissions checks in target | |
5391 | methods. Second, if the target is wired to disallow particular | |
5392 | settings (for instance, a system in the field that is not set up to | |
5393 | be able to stop at a breakpoint), it can object to any unavailable | |
5394 | permissions. */ | |
5395 | ||
5396 | void | |
f6ac5f3d | 5397 | remote_target::set_permissions () |
d914c394 SS |
5398 | { |
5399 | struct remote_state *rs = get_remote_state (); | |
5400 | ||
8d64371b | 5401 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QAllow:" |
bba74b36 YQ |
5402 | "WriteReg:%x;WriteMem:%x;" |
5403 | "InsertBreak:%x;InsertTrace:%x;" | |
5404 | "InsertFastTrace:%x;Stop:%x", | |
5405 | may_write_registers, may_write_memory, | |
5406 | may_insert_breakpoints, may_insert_tracepoints, | |
5407 | may_insert_fast_tracepoints, may_stop); | |
d914c394 | 5408 | putpkt (rs->buf); |
8d64371b | 5409 | getpkt (&rs->buf, 0); |
d914c394 SS |
5410 | |
5411 | /* If the target didn't like the packet, warn the user. Do not try | |
5412 | to undo the user's settings, that would just be maddening. */ | |
8d64371b TT |
5413 | if (strcmp (rs->buf.data (), "OK") != 0) |
5414 | warning (_("Remote refused setting permissions with: %s"), | |
5415 | rs->buf.data ()); | |
d914c394 SS |
5416 | } |
5417 | ||
be2a5f71 DJ |
5418 | /* This type describes each known response to the qSupported |
5419 | packet. */ | |
5420 | struct protocol_feature | |
5421 | { | |
5422 | /* The name of this protocol feature. */ | |
5423 | const char *name; | |
5424 | ||
5425 | /* The default for this protocol feature. */ | |
5426 | enum packet_support default_support; | |
5427 | ||
5428 | /* The function to call when this feature is reported, or after | |
5429 | qSupported processing if the feature is not supported. | |
5430 | The first argument points to this structure. The second | |
5431 | argument indicates whether the packet requested support be | |
5432 | enabled, disabled, or probed (or the default, if this function | |
5433 | is being called at the end of processing and this feature was | |
5434 | not reported). The third argument may be NULL; if not NULL, it | |
5435 | is a NUL-terminated string taken from the packet following | |
5436 | this feature's name and an equals sign. */ | |
6b8edb51 PA |
5437 | void (*func) (remote_target *remote, const struct protocol_feature *, |
5438 | enum packet_support, const char *); | |
be2a5f71 DJ |
5439 | |
5440 | /* The corresponding packet for this feature. Only used if | |
5441 | FUNC is remote_supported_packet. */ | |
5442 | int packet; | |
5443 | }; | |
5444 | ||
be2a5f71 | 5445 | static void |
6b8edb51 PA |
5446 | remote_supported_packet (remote_target *remote, |
5447 | const struct protocol_feature *feature, | |
be2a5f71 DJ |
5448 | enum packet_support support, |
5449 | const char *argument) | |
5450 | { | |
5451 | if (argument) | |
5452 | { | |
5453 | warning (_("Remote qSupported response supplied an unexpected value for" | |
5454 | " \"%s\"."), feature->name); | |
5455 | return; | |
5456 | } | |
5457 | ||
ff52c073 | 5458 | remote->m_features.m_protocol_packets[feature->packet].support = support; |
be2a5f71 | 5459 | } |
be2a5f71 | 5460 | |
6b8edb51 PA |
5461 | void |
5462 | remote_target::remote_packet_size (const protocol_feature *feature, | |
5463 | enum packet_support support, const char *value) | |
be2a5f71 DJ |
5464 | { |
5465 | struct remote_state *rs = get_remote_state (); | |
5466 | ||
5467 | int packet_size; | |
5468 | char *value_end; | |
5469 | ||
5470 | if (support != PACKET_ENABLE) | |
5471 | return; | |
5472 | ||
5473 | if (value == NULL || *value == '\0') | |
5474 | { | |
5475 | warning (_("Remote target reported \"%s\" without a size."), | |
5476 | feature->name); | |
5477 | return; | |
5478 | } | |
5479 | ||
5480 | errno = 0; | |
5481 | packet_size = strtol (value, &value_end, 16); | |
5482 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
5483 | { | |
5484 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
5485 | feature->name, value); | |
5486 | return; | |
5487 | } | |
5488 | ||
be2a5f71 DJ |
5489 | /* Record the new maximum packet size. */ |
5490 | rs->explicit_packet_size = packet_size; | |
5491 | } | |
5492 | ||
cb8c24b6 | 5493 | static void |
6b8edb51 PA |
5494 | remote_packet_size (remote_target *remote, const protocol_feature *feature, |
5495 | enum packet_support support, const char *value) | |
5496 | { | |
5497 | remote->remote_packet_size (feature, support, value); | |
5498 | } | |
5499 | ||
dc473cfb | 5500 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 5501 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 5502 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 5503 | PACKET_qXfer_auxv }, |
c78fa86a GB |
5504 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
5505 | PACKET_qXfer_exec_file }, | |
23181151 DJ |
5506 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
5507 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
5508 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
5509 | PACKET_qXfer_libraries }, | |
2268b414 JK |
5510 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
5511 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 5512 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 5513 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 5514 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 5515 | PACKET_qXfer_memory_map }, |
07e059b5 VP |
5516 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
5517 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
5518 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
5519 | PACKET_qXfer_threads }, | |
b3b9301e PA |
5520 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
5521 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
5522 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
5523 | PACKET_QPassSignals }, | |
82075af2 JS |
5524 | { "QCatchSyscalls", PACKET_DISABLE, remote_supported_packet, |
5525 | PACKET_QCatchSyscalls }, | |
9b224c5e PA |
5526 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
5527 | PACKET_QProgramSignals }, | |
bc3b087d SDJ |
5528 | { "QSetWorkingDir", PACKET_DISABLE, remote_supported_packet, |
5529 | PACKET_QSetWorkingDir }, | |
aefd8b33 SDJ |
5530 | { "QStartupWithShell", PACKET_DISABLE, remote_supported_packet, |
5531 | PACKET_QStartupWithShell }, | |
0a2dde4a SDJ |
5532 | { "QEnvironmentHexEncoded", PACKET_DISABLE, remote_supported_packet, |
5533 | PACKET_QEnvironmentHexEncoded }, | |
5534 | { "QEnvironmentReset", PACKET_DISABLE, remote_supported_packet, | |
5535 | PACKET_QEnvironmentReset }, | |
5536 | { "QEnvironmentUnset", PACKET_DISABLE, remote_supported_packet, | |
5537 | PACKET_QEnvironmentUnset }, | |
a6f3e723 SL |
5538 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
5539 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
5540 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
5541 | PACKET_multiprocess_feature }, | |
5542 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
5543 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
5544 | PACKET_qXfer_siginfo_read }, | |
5545 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
5546 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 5547 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 5548 | PACKET_ConditionalTracepoints }, |
4082afcc | 5549 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 5550 | PACKET_ConditionalBreakpoints }, |
4082afcc | 5551 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 5552 | PACKET_BreakpointCommands }, |
4082afcc | 5553 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 5554 | PACKET_FastTracepoints }, |
4082afcc | 5555 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 5556 | PACKET_StaticTracepoints }, |
4082afcc | 5557 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 5558 | PACKET_InstallInTrace}, |
4082afcc PA |
5559 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
5560 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
5561 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
5562 | PACKET_bc }, | |
5563 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
5564 | PACKET_bs }, | |
409873ef SS |
5565 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
5566 | PACKET_TracepointSource }, | |
d914c394 SS |
5567 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
5568 | PACKET_QAllow }, | |
4082afcc PA |
5569 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
5570 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
5571 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
5572 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
5573 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
5574 | PACKET_qXfer_uib }, | |
03583c20 UW |
5575 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
5576 | PACKET_QDisableRandomization }, | |
d1feda86 | 5577 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
5578 | { "QTBuffer:size", PACKET_DISABLE, |
5579 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 5580 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
5581 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
5582 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
b20a6524 | 5583 | { "Qbtrace:pt", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_pt }, |
9accd112 | 5584 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, |
f4abbc16 MM |
5585 | PACKET_qXfer_btrace }, |
5586 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
5587 | PACKET_qXfer_btrace_conf }, |
5588 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
5589 | PACKET_Qbtrace_conf_bts_size }, |
5590 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 5591 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
89245bc0 DB |
5592 | { "fork-events", PACKET_DISABLE, remote_supported_packet, |
5593 | PACKET_fork_event_feature }, | |
5594 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
5595 | PACKET_vfork_event_feature }, | |
94585166 DB |
5596 | { "exec-events", PACKET_DISABLE, remote_supported_packet, |
5597 | PACKET_exec_event_feature }, | |
b20a6524 | 5598 | { "Qbtrace-conf:pt:size", PACKET_DISABLE, remote_supported_packet, |
750ce8d1 | 5599 | PACKET_Qbtrace_conf_pt_size }, |
65706a29 PA |
5600 | { "vContSupported", PACKET_DISABLE, remote_supported_packet, PACKET_vContSupported }, |
5601 | { "QThreadEvents", PACKET_DISABLE, remote_supported_packet, PACKET_QThreadEvents }, | |
f2faf941 | 5602 | { "no-resumed", PACKET_DISABLE, remote_supported_packet, PACKET_no_resumed }, |
2c2e7f87 LM |
5603 | { "memory-tagging", PACKET_DISABLE, remote_supported_packet, |
5604 | PACKET_memory_tagging_feature }, | |
be2a5f71 DJ |
5605 | }; |
5606 | ||
c8d5aac9 L |
5607 | static char *remote_support_xml; |
5608 | ||
5609 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
5610 | ||
5611 | void | |
6e39997a | 5612 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
5613 | { |
5614 | #if defined(HAVE_LIBEXPAT) | |
5615 | if (remote_support_xml == NULL) | |
c4f7c687 | 5616 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
5617 | else |
5618 | { | |
5619 | char *copy = xstrdup (remote_support_xml + 13); | |
ca3a04f6 CB |
5620 | char *saveptr; |
5621 | char *p = strtok_r (copy, ",", &saveptr); | |
c8d5aac9 L |
5622 | |
5623 | do | |
5624 | { | |
5625 | if (strcmp (p, xml) == 0) | |
5626 | { | |
5627 | /* already there */ | |
5628 | xfree (copy); | |
5629 | return; | |
5630 | } | |
5631 | } | |
ca3a04f6 | 5632 | while ((p = strtok_r (NULL, ",", &saveptr)) != NULL); |
c8d5aac9 L |
5633 | xfree (copy); |
5634 | ||
94b0dee1 PA |
5635 | remote_support_xml = reconcat (remote_support_xml, |
5636 | remote_support_xml, ",", xml, | |
5637 | (char *) NULL); | |
c8d5aac9 L |
5638 | } |
5639 | #endif | |
5640 | } | |
5641 | ||
69b6ecb0 TT |
5642 | static void |
5643 | remote_query_supported_append (std::string *msg, const char *append) | |
c8d5aac9 | 5644 | { |
69b6ecb0 TT |
5645 | if (!msg->empty ()) |
5646 | msg->append (";"); | |
5647 | msg->append (append); | |
c8d5aac9 L |
5648 | } |
5649 | ||
6b8edb51 PA |
5650 | void |
5651 | remote_target::remote_query_supported () | |
be2a5f71 DJ |
5652 | { |
5653 | struct remote_state *rs = get_remote_state (); | |
5654 | char *next; | |
5655 | int i; | |
5656 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
5657 | ||
5658 | /* The packet support flags are handled differently for this packet | |
5659 | than for most others. We treat an error, a disabled packet, and | |
5660 | an empty response identically: any features which must be reported | |
5661 | to be used will be automatically disabled. An empty buffer | |
5662 | accomplishes this, since that is also the representation for a list | |
5663 | containing no features. */ | |
5664 | ||
5665 | rs->buf[0] = 0; | |
ff52c073 | 5666 | if (m_features.packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 5667 | { |
69b6ecb0 | 5668 | std::string q; |
c8d5aac9 | 5669 | |
ff52c073 CS |
5670 | if (m_features.packet_set_cmd_state (PACKET_multiprocess_feature) |
5671 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5672 | remote_query_supported_append (&q, "multiprocess+"); |
c8d5aac9 | 5673 | |
ff52c073 CS |
5674 | if (m_features.packet_set_cmd_state (PACKET_swbreak_feature) |
5675 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5676 | remote_query_supported_append (&q, "swbreak+"); |
ff52c073 CS |
5677 | |
5678 | if (m_features.packet_set_cmd_state (PACKET_hwbreak_feature) | |
5679 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5680 | remote_query_supported_append (&q, "hwbreak+"); |
f7e6eed5 | 5681 | |
69b6ecb0 | 5682 | remote_query_supported_append (&q, "qRelocInsn+"); |
dde08ee1 | 5683 | |
ff52c073 | 5684 | if (m_features.packet_set_cmd_state (PACKET_fork_event_feature) |
8020350c | 5685 | != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5686 | remote_query_supported_append (&q, "fork-events+"); |
ff52c073 CS |
5687 | |
5688 | if (m_features.packet_set_cmd_state (PACKET_vfork_event_feature) | |
8020350c | 5689 | != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5690 | remote_query_supported_append (&q, "vfork-events+"); |
ff52c073 CS |
5691 | |
5692 | if (m_features.packet_set_cmd_state (PACKET_exec_event_feature) | |
8020350c | 5693 | != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5694 | remote_query_supported_append (&q, "exec-events+"); |
89245bc0 | 5695 | |
ff52c073 CS |
5696 | if (m_features.packet_set_cmd_state (PACKET_vContSupported) |
5697 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5698 | remote_query_supported_append (&q, "vContSupported+"); |
750ce8d1 | 5699 | |
ff52c073 CS |
5700 | if (m_features.packet_set_cmd_state (PACKET_QThreadEvents) |
5701 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5702 | remote_query_supported_append (&q, "QThreadEvents+"); |
65706a29 | 5703 | |
ff52c073 CS |
5704 | if (m_features.packet_set_cmd_state (PACKET_no_resumed) |
5705 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5706 | remote_query_supported_append (&q, "no-resumed+"); |
f2faf941 | 5707 | |
ff52c073 | 5708 | if (m_features.packet_set_cmd_state (PACKET_memory_tagging_feature) |
2c2e7f87 LM |
5709 | != AUTO_BOOLEAN_FALSE) |
5710 | remote_query_supported_append (&q, "memory-tagging+"); | |
5711 | ||
b35d5edb PA |
5712 | /* Keep this one last to work around a gdbserver <= 7.10 bug in |
5713 | the qSupported:xmlRegisters=i386 handling. */ | |
7cc244de | 5714 | if (remote_support_xml != NULL |
ff52c073 CS |
5715 | && (m_features.packet_support (PACKET_qXfer_features) |
5716 | != PACKET_DISABLE)) | |
69b6ecb0 | 5717 | remote_query_supported_append (&q, remote_support_xml); |
82f73884 | 5718 | |
69b6ecb0 TT |
5719 | q = "qSupported:" + q; |
5720 | putpkt (q.c_str ()); | |
94b0dee1 | 5721 | |
8d64371b | 5722 | getpkt (&rs->buf, 0); |
be2a5f71 | 5723 | |
33b5899f | 5724 | /* If an error occurred, warn, but do not return - just reset the |
be2a5f71 | 5725 | buffer to empty and go on to disable features. */ |
ff52c073 | 5726 | if (m_features.packet_ok (rs->buf, PACKET_qSupported) == PACKET_ERROR) |
be2a5f71 | 5727 | { |
8d64371b | 5728 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
be2a5f71 DJ |
5729 | rs->buf[0] = 0; |
5730 | } | |
5731 | } | |
5732 | ||
5733 | memset (seen, 0, sizeof (seen)); | |
5734 | ||
8d64371b | 5735 | next = rs->buf.data (); |
be2a5f71 DJ |
5736 | while (*next) |
5737 | { | |
5738 | enum packet_support is_supported; | |
5739 | char *p, *end, *name_end, *value; | |
5740 | ||
5741 | /* First separate out this item from the rest of the packet. If | |
5742 | there's another item after this, we overwrite the separator | |
5743 | (terminated strings are much easier to work with). */ | |
5744 | p = next; | |
5745 | end = strchr (p, ';'); | |
5746 | if (end == NULL) | |
5747 | { | |
5748 | end = p + strlen (p); | |
5749 | next = end; | |
5750 | } | |
5751 | else | |
5752 | { | |
89be2091 DJ |
5753 | *end = '\0'; |
5754 | next = end + 1; | |
5755 | ||
be2a5f71 DJ |
5756 | if (end == p) |
5757 | { | |
5758 | warning (_("empty item in \"qSupported\" response")); | |
5759 | continue; | |
5760 | } | |
be2a5f71 DJ |
5761 | } |
5762 | ||
5763 | name_end = strchr (p, '='); | |
5764 | if (name_end) | |
5765 | { | |
5766 | /* This is a name=value entry. */ | |
5767 | is_supported = PACKET_ENABLE; | |
5768 | value = name_end + 1; | |
5769 | *name_end = '\0'; | |
5770 | } | |
5771 | else | |
5772 | { | |
5773 | value = NULL; | |
5774 | switch (end[-1]) | |
5775 | { | |
5776 | case '+': | |
5777 | is_supported = PACKET_ENABLE; | |
5778 | break; | |
5779 | ||
5780 | case '-': | |
5781 | is_supported = PACKET_DISABLE; | |
5782 | break; | |
5783 | ||
5784 | case '?': | |
5785 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
5786 | break; | |
5787 | ||
5788 | default: | |
3e43a32a MS |
5789 | warning (_("unrecognized item \"%s\" " |
5790 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
5791 | continue; |
5792 | } | |
5793 | end[-1] = '\0'; | |
5794 | } | |
5795 | ||
5796 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5797 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
5798 | { | |
5799 | const struct protocol_feature *feature; | |
5800 | ||
5801 | seen[i] = 1; | |
5802 | feature = &remote_protocol_features[i]; | |
6b8edb51 | 5803 | feature->func (this, feature, is_supported, value); |
be2a5f71 DJ |
5804 | break; |
5805 | } | |
5806 | } | |
5807 | ||
5808 | /* If we increased the packet size, make sure to increase the global | |
5809 | buffer size also. We delay this until after parsing the entire | |
5810 | qSupported packet, because this is the same buffer we were | |
5811 | parsing. */ | |
8d64371b TT |
5812 | if (rs->buf.size () < rs->explicit_packet_size) |
5813 | rs->buf.resize (rs->explicit_packet_size); | |
be2a5f71 DJ |
5814 | |
5815 | /* Handle the defaults for unmentioned features. */ | |
5816 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5817 | if (!seen[i]) | |
5818 | { | |
5819 | const struct protocol_feature *feature; | |
5820 | ||
5821 | feature = &remote_protocol_features[i]; | |
6b8edb51 | 5822 | feature->func (this, feature, feature->default_support, NULL); |
be2a5f71 DJ |
5823 | } |
5824 | } | |
5825 | ||
048094ac PA |
5826 | /* Serial QUIT handler for the remote serial descriptor. |
5827 | ||
5828 | Defers handling a Ctrl-C until we're done with the current | |
5829 | command/response packet sequence, unless: | |
5830 | ||
5831 | - We're setting up the connection. Don't send a remote interrupt | |
5832 | request, as we're not fully synced yet. Quit immediately | |
5833 | instead. | |
5834 | ||
5835 | - The target has been resumed in the foreground | |
223ffa71 | 5836 | (target_terminal::is_ours is false) with a synchronous resume |
048094ac PA |
5837 | packet, and we're blocked waiting for the stop reply, thus a |
5838 | Ctrl-C should be immediately sent to the target. | |
5839 | ||
5840 | - We get a second Ctrl-C while still within the same serial read or | |
5841 | write. In that case the serial is seemingly wedged --- offer to | |
5842 | quit/disconnect. | |
5843 | ||
5844 | - We see a second Ctrl-C without target response, after having | |
5845 | previously interrupted the target. In that case the target/stub | |
5846 | is probably wedged --- offer to quit/disconnect. | |
5847 | */ | |
5848 | ||
6b8edb51 PA |
5849 | void |
5850 | remote_target::remote_serial_quit_handler () | |
048094ac PA |
5851 | { |
5852 | struct remote_state *rs = get_remote_state (); | |
5853 | ||
5854 | if (check_quit_flag ()) | |
5855 | { | |
5856 | /* If we're starting up, we're not fully synced yet. Quit | |
5857 | immediately. */ | |
5858 | if (rs->starting_up) | |
5859 | quit (); | |
5860 | else if (rs->got_ctrlc_during_io) | |
5861 | { | |
5862 | if (query (_("The target is not responding to GDB commands.\n" | |
5863 | "Stop debugging it? "))) | |
5b6d1e4f | 5864 | remote_unpush_and_throw (this); |
048094ac PA |
5865 | } |
5866 | /* If ^C has already been sent once, offer to disconnect. */ | |
223ffa71 | 5867 | else if (!target_terminal::is_ours () && rs->ctrlc_pending_p) |
048094ac PA |
5868 | interrupt_query (); |
5869 | /* All-stop protocol, and blocked waiting for stop reply. Send | |
5870 | an interrupt request. */ | |
223ffa71 | 5871 | else if (!target_terminal::is_ours () && rs->waiting_for_stop_reply) |
e671cd59 | 5872 | target_interrupt (); |
048094ac PA |
5873 | else |
5874 | rs->got_ctrlc_during_io = 1; | |
5875 | } | |
5876 | } | |
5877 | ||
6b8edb51 PA |
5878 | /* The remote_target that is current while the quit handler is |
5879 | overridden with remote_serial_quit_handler. */ | |
5880 | static remote_target *curr_quit_handler_target; | |
5881 | ||
5882 | static void | |
5883 | remote_serial_quit_handler () | |
5884 | { | |
5885 | curr_quit_handler_target->remote_serial_quit_handler (); | |
5886 | } | |
5887 | ||
5b6d1e4f PA |
5888 | /* Remove the remote target from the target stack of each inferior |
5889 | that is using it. Upper targets depend on it so remove them | |
5890 | first. */ | |
78a095c3 JK |
5891 | |
5892 | static void | |
5b6d1e4f | 5893 | remote_unpush_target (remote_target *target) |
78a095c3 | 5894 | { |
5b6d1e4f PA |
5895 | /* We have to unpush the target from all inferiors, even those that |
5896 | aren't running. */ | |
5897 | scoped_restore_current_inferior restore_current_inferior; | |
5898 | ||
5899 | for (inferior *inf : all_inferiors (target)) | |
5900 | { | |
5901 | switch_to_inferior_no_thread (inf); | |
c8181f70 | 5902 | inf->pop_all_targets_at_and_above (process_stratum); |
5b6d1e4f PA |
5903 | generic_mourn_inferior (); |
5904 | } | |
d7cb0ef3 PA |
5905 | |
5906 | /* Don't rely on target_close doing this when the target is popped | |
5907 | from the last remote inferior above, because something may be | |
5908 | holding a reference to the target higher up on the stack, meaning | |
5909 | target_close won't be called yet. We lost the connection to the | |
5910 | target, so clear these now, otherwise we may later throw | |
5911 | TARGET_CLOSE_ERROR while trying to tell the remote target to | |
5912 | close the file. */ | |
5913 | fileio_handles_invalidate_target (target); | |
78a095c3 | 5914 | } |
be2a5f71 | 5915 | |
048094ac | 5916 | static void |
5b6d1e4f | 5917 | remote_unpush_and_throw (remote_target *target) |
048094ac | 5918 | { |
5b6d1e4f | 5919 | remote_unpush_target (target); |
048094ac PA |
5920 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
5921 | } | |
5922 | ||
f6ac5f3d PA |
5923 | void |
5924 | remote_target::open_1 (const char *name, int from_tty, int extended_p) | |
c906108c | 5925 | { |
6b8edb51 | 5926 | remote_target *curr_remote = get_current_remote_target (); |
a6f3e723 | 5927 | |
c906108c | 5928 | if (name == 0) |
8a3fe4f8 | 5929 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 5930 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 5931 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 5932 | |
2d717e4f | 5933 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
5934 | Ask this question first, before target_preopen has a chance to kill |
5935 | anything. */ | |
55f6301a | 5936 | if (curr_remote != NULL && !target_has_execution ()) |
2d717e4f | 5937 | { |
78a095c3 JK |
5938 | if (from_tty |
5939 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
5940 | error (_("Still connected.")); |
5941 | } | |
5942 | ||
78a095c3 | 5943 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
5944 | target_preopen (from_tty); |
5945 | ||
ad9a8f3f | 5946 | remote_fileio_reset (); |
1dd41f16 | 5947 | reopen_exec_file (); |
9dec38d3 | 5948 | reread_symbols (from_tty); |
1dd41f16 | 5949 | |
6b8edb51 PA |
5950 | remote_target *remote |
5951 | = (extended_p ? new extended_remote_target () : new remote_target ()); | |
5952 | target_ops_up target_holder (remote); | |
5953 | ||
5954 | remote_state *rs = remote->get_remote_state (); | |
5955 | ||
5956 | /* See FIXME above. */ | |
5957 | if (!target_async_permitted) | |
5958 | rs->wait_forever_enabled_p = 1; | |
5959 | ||
5d93a237 TT |
5960 | rs->remote_desc = remote_serial_open (name); |
5961 | if (!rs->remote_desc) | |
c906108c SS |
5962 | perror_with_name (name); |
5963 | ||
5964 | if (baud_rate != -1) | |
5965 | { | |
5d93a237 | 5966 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 5967 | { |
9b74d5d3 KB |
5968 | /* The requested speed could not be set. Error out to |
5969 | top level after closing remote_desc. Take care to | |
5970 | set remote_desc to NULL to avoid closing remote_desc | |
5971 | more than once. */ | |
5d93a237 TT |
5972 | serial_close (rs->remote_desc); |
5973 | rs->remote_desc = NULL; | |
c906108c SS |
5974 | perror_with_name (name); |
5975 | } | |
5976 | } | |
5977 | ||
236af5e3 | 5978 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 5979 | serial_raw (rs->remote_desc); |
c906108c SS |
5980 | |
5981 | /* If there is something sitting in the buffer we might take it as a | |
5982 | response to a command, which would be bad. */ | |
5d93a237 | 5983 | serial_flush_input (rs->remote_desc); |
c906108c SS |
5984 | |
5985 | if (from_tty) | |
5986 | { | |
0426ad51 TT |
5987 | gdb_puts ("Remote debugging using "); |
5988 | gdb_puts (name); | |
5989 | gdb_puts ("\n"); | |
c906108c | 5990 | } |
d9f719f1 | 5991 | |
6b8edb51 | 5992 | /* Switch to using the remote target now. */ |
02980c56 | 5993 | current_inferior ()->push_target (std::move (target_holder)); |
c906108c | 5994 | |
74531fed | 5995 | /* Register extra event sources in the event loop. */ |
6b8edb51 | 5996 | rs->remote_async_inferior_event_token |
baa8575b | 5997 | = create_async_event_handler (remote_async_inferior_event_handler, nullptr, |
db20ebdf | 5998 | "remote"); |
6b8edb51 | 5999 | rs->notif_state = remote_notif_state_allocate (remote); |
74531fed | 6000 | |
be2a5f71 DJ |
6001 | /* Reset the target state; these things will be queried either by |
6002 | remote_query_supported or as they are needed. */ | |
ff52c073 | 6003 | remote->m_features.reset_all_packet_configs_support (); |
be2a5f71 | 6004 | rs->explicit_packet_size = 0; |
a6f3e723 | 6005 | rs->noack_mode = 0; |
82f73884 | 6006 | rs->extended = extended_p; |
e24a49d8 | 6007 | rs->waiting_for_stop_reply = 0; |
3a29589a | 6008 | rs->ctrlc_pending_p = 0; |
048094ac | 6009 | rs->got_ctrlc_during_io = 0; |
802188a7 | 6010 | |
47f8a51d TT |
6011 | rs->general_thread = not_sent_ptid; |
6012 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 6013 | rs->remote_traceframe_number = -1; |
c906108c | 6014 | |
3a00c802 PA |
6015 | rs->last_resume_exec_dir = EXEC_FORWARD; |
6016 | ||
9d1f7ab2 | 6017 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
6018 | rs->use_threadinfo_query = 1; |
6019 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 6020 | |
dd194f6b | 6021 | rs->readahead_cache.invalidate (); |
80152258 | 6022 | |
c6ebd6cf | 6023 | if (target_async_permitted) |
92d1e331 | 6024 | { |
92d1e331 DJ |
6025 | /* FIXME: cagney/1999-09-23: During the initial connection it is |
6026 | assumed that the target is already ready and able to respond to | |
0df8b418 | 6027 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 6028 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 6029 | around this. Eventually a mechanism that allows |
92d1e331 | 6030 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 6031 | implemented. */ |
6b8edb51 | 6032 | rs->wait_forever_enabled_p = 0; |
92d1e331 DJ |
6033 | } |
6034 | ||
23860348 | 6035 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 6036 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 6037 | |
36918e70 | 6038 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
6039 | target (we'd otherwise be in an inconsistent state) and then |
6040 | propogate the error on up the exception chain. This ensures that | |
6041 | the caller doesn't stumble along blindly assuming that the | |
6042 | function succeeded. The CLI doesn't have this problem but other | |
6043 | UI's, such as MI do. | |
36918e70 AC |
6044 | |
6045 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
6046 | this function should return an error indication letting the | |
ce2826aa | 6047 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
6048 | ``target remote'' is directly wired to this function making that |
6049 | impossible. On a positive note, the CLI side of this problem has | |
6050 | been fixed - the function set_cmd_context() makes it possible for | |
6051 | all the ``target ....'' commands to share a common callback | |
6052 | function. See cli-dump.c. */ | |
109c3e39 | 6053 | { |
2d717e4f | 6054 | |
a70b8144 | 6055 | try |
04bd08de | 6056 | { |
6b8edb51 | 6057 | remote->start_remote (from_tty, extended_p); |
04bd08de | 6058 | } |
230d2906 | 6059 | catch (const gdb_exception &ex) |
109c3e39 | 6060 | { |
c8d104ad PA |
6061 | /* Pop the partially set up target - unless something else did |
6062 | already before throwing the exception. */ | |
6b8edb51 | 6063 | if (ex.error != TARGET_CLOSE_ERROR) |
5b6d1e4f | 6064 | remote_unpush_target (remote); |
eedc3f4f | 6065 | throw; |
109c3e39 AC |
6066 | } |
6067 | } | |
c906108c | 6068 | |
6b8edb51 | 6069 | remote_btrace_reset (rs); |
f4abbc16 | 6070 | |
c6ebd6cf | 6071 | if (target_async_permitted) |
6b8edb51 | 6072 | rs->wait_forever_enabled_p = 1; |
43ff13b4 JM |
6073 | } |
6074 | ||
28561a65 | 6075 | /* Determine if WS represents a fork status. */ |
a4543480 | 6076 | |
28561a65 SM |
6077 | static bool |
6078 | is_fork_status (target_waitkind kind) | |
a4543480 | 6079 | { |
28561a65 SM |
6080 | return (kind == TARGET_WAITKIND_FORKED |
6081 | || kind == TARGET_WAITKIND_VFORKED); | |
a4543480 SM |
6082 | } |
6083 | ||
28561a65 SM |
6084 | /* Return THREAD's pending status if it is a pending fork parent, else |
6085 | return nullptr. */ | |
a4543480 | 6086 | |
28561a65 | 6087 | static const target_waitstatus * |
a4543480 SM |
6088 | thread_pending_fork_status (struct thread_info *thread) |
6089 | { | |
28561a65 SM |
6090 | const target_waitstatus &ws |
6091 | = (thread->has_pending_waitstatus () | |
6092 | ? thread->pending_waitstatus () | |
6093 | : thread->pending_follow); | |
a4543480 | 6094 | |
28561a65 SM |
6095 | if (!is_fork_status (ws.kind ())) |
6096 | return nullptr; | |
a4543480 | 6097 | |
28561a65 | 6098 | return &ws; |
a4543480 SM |
6099 | } |
6100 | ||
de0d863e DB |
6101 | /* Detach the specified process. */ |
6102 | ||
6b8edb51 PA |
6103 | void |
6104 | remote_target::remote_detach_pid (int pid) | |
de0d863e DB |
6105 | { |
6106 | struct remote_state *rs = get_remote_state (); | |
6107 | ||
4c7333b3 PA |
6108 | /* This should not be necessary, but the handling for D;PID in |
6109 | GDBserver versions prior to 8.2 incorrectly assumes that the | |
6110 | selected process points to the same process we're detaching, | |
6111 | leading to misbehavior (and possibly GDBserver crashing) when it | |
6112 | does not. Since it's easy and cheap, work around it by forcing | |
6113 | GDBserver to select GDB's current process. */ | |
6114 | set_general_process (); | |
6115 | ||
ff52c073 | 6116 | if (m_features.remote_multi_process_p ()) |
8d64371b | 6117 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "D;%x", pid); |
de0d863e | 6118 | else |
8d64371b | 6119 | strcpy (rs->buf.data (), "D"); |
de0d863e DB |
6120 | |
6121 | putpkt (rs->buf); | |
8d64371b | 6122 | getpkt (&rs->buf, 0); |
de0d863e DB |
6123 | |
6124 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') | |
6125 | ; | |
6126 | else if (rs->buf[0] == '\0') | |
6127 | error (_("Remote doesn't know how to detach")); | |
6128 | else | |
6129 | error (_("Can't detach process.")); | |
6130 | } | |
6131 | ||
6132 | /* This detaches a program to which we previously attached, using | |
6133 | inferior_ptid to identify the process. After this is done, GDB | |
6134 | can be used to debug some other program. We better not have left | |
6135 | any breakpoints in the target program or it'll die when it hits | |
6136 | one. */ | |
c906108c | 6137 | |
6b8edb51 | 6138 | void |
00431a78 | 6139 | remote_target::remote_detach_1 (inferior *inf, int from_tty) |
c906108c | 6140 | { |
e99b03dc | 6141 | int pid = inferior_ptid.pid (); |
d01949b6 | 6142 | struct remote_state *rs = get_remote_state (); |
de0d863e | 6143 | int is_fork_parent; |
c906108c | 6144 | |
55f6301a | 6145 | if (!target_has_execution ()) |
2d717e4f DJ |
6146 | error (_("No process to detach from.")); |
6147 | ||
0f48b757 | 6148 | target_announce_detach (from_tty); |
7cee1e54 | 6149 | |
e87f0fe8 PA |
6150 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) |
6151 | { | |
6152 | /* If we're in breakpoints-always-inserted mode, or the inferior | |
6153 | is running, we have to remove breakpoints before detaching. | |
6154 | We don't do this in common code instead because not all | |
6155 | targets support removing breakpoints while the target is | |
6156 | running. The remote target / gdbserver does, though. */ | |
6157 | remove_breakpoints_inf (current_inferior ()); | |
6158 | } | |
6159 | ||
c906108c | 6160 | /* Tell the remote target to detach. */ |
de0d863e | 6161 | remote_detach_pid (pid); |
82f73884 | 6162 | |
8020350c | 6163 | /* Exit only if this is the only active inferior. */ |
5b6d1e4f | 6164 | if (from_tty && !rs->extended && number_of_live_inferiors (this) == 1) |
0426ad51 | 6165 | gdb_puts (_("Ending remote debugging.\n")); |
82f73884 | 6166 | |
df5ad102 SM |
6167 | /* See if any thread of the inferior we are detaching has a pending fork |
6168 | status. In that case, we must detach from the child resulting from | |
6169 | that fork. */ | |
6170 | for (thread_info *thread : inf->non_exited_threads ()) | |
6171 | { | |
6172 | const target_waitstatus *ws = thread_pending_fork_status (thread); | |
6173 | ||
6174 | if (ws == nullptr) | |
6175 | continue; | |
6176 | ||
6177 | remote_detach_pid (ws->child_ptid ().pid ()); | |
6178 | } | |
6179 | ||
6180 | /* Check also for any pending fork events in the stop reply queue. */ | |
6181 | remote_notif_get_pending_events (¬if_client_stop); | |
6182 | for (stop_reply_up &reply : rs->stop_reply_queue) | |
6183 | { | |
6184 | if (reply->ptid.pid () != pid) | |
6185 | continue; | |
6186 | ||
6187 | if (!is_fork_status (reply->ws.kind ())) | |
6188 | continue; | |
6189 | ||
6190 | remote_detach_pid (reply->ws.child_ptid ().pid ()); | |
6191 | } | |
6192 | ||
9213a6d7 | 6193 | thread_info *tp = this->find_thread (inferior_ptid); |
00431a78 | 6194 | |
de0d863e DB |
6195 | /* Check to see if we are detaching a fork parent. Note that if we |
6196 | are detaching a fork child, tp == NULL. */ | |
6197 | is_fork_parent = (tp != NULL | |
183be222 | 6198 | && tp->pending_follow.kind () == TARGET_WAITKIND_FORKED); |
de0d863e DB |
6199 | |
6200 | /* If doing detach-on-fork, we don't mourn, because that will delete | |
6201 | breakpoints that should be available for the followed inferior. */ | |
6202 | if (!is_fork_parent) | |
f67c0c91 | 6203 | { |
249b5733 PA |
6204 | /* Save the pid as a string before mourning, since that will |
6205 | unpush the remote target, and we need the string after. */ | |
f2907e49 | 6206 | std::string infpid = target_pid_to_str (ptid_t (pid)); |
f67c0c91 SDJ |
6207 | |
6208 | target_mourn_inferior (inferior_ptid); | |
6209 | if (print_inferior_events) | |
6cb06a8c TT |
6210 | gdb_printf (_("[Inferior %d (%s) detached]\n"), |
6211 | inf->num, infpid.c_str ()); | |
f67c0c91 | 6212 | } |
de0d863e DB |
6213 | else |
6214 | { | |
0ac55310 | 6215 | switch_to_no_thread (); |
00431a78 | 6216 | detach_inferior (current_inferior ()); |
de0d863e | 6217 | } |
2d717e4f DJ |
6218 | } |
6219 | ||
f6ac5f3d PA |
6220 | void |
6221 | remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 6222 | { |
00431a78 | 6223 | remote_detach_1 (inf, from_tty); |
2d717e4f DJ |
6224 | } |
6225 | ||
f6ac5f3d PA |
6226 | void |
6227 | extended_remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 6228 | { |
00431a78 | 6229 | remote_detach_1 (inf, from_tty); |
de0d863e DB |
6230 | } |
6231 | ||
6232 | /* Target follow-fork function for remote targets. On entry, and | |
6233 | at return, the current inferior is the fork parent. | |
6234 | ||
6235 | Note that although this is currently only used for extended-remote, | |
6236 | it is named remote_follow_fork in anticipation of using it for the | |
6237 | remote target as well. */ | |
6238 | ||
e97007b6 | 6239 | void |
82d1f134 SM |
6240 | remote_target::follow_fork (inferior *child_inf, ptid_t child_ptid, |
6241 | target_waitkind fork_kind, bool follow_child, | |
6242 | bool detach_fork) | |
de0d863e | 6243 | { |
82d1f134 SM |
6244 | process_stratum_target::follow_fork (child_inf, child_ptid, |
6245 | fork_kind, follow_child, detach_fork); | |
6246 | ||
ff52c073 CS |
6247 | if ((fork_kind == TARGET_WAITKIND_FORKED |
6248 | && m_features.remote_fork_event_p ()) | |
6249 | || (fork_kind == TARGET_WAITKIND_VFORKED | |
6250 | && m_features.remote_vfork_event_p ())) | |
de0d863e DB |
6251 | { |
6252 | /* When following the parent and detaching the child, we detach | |
6253 | the child here. For the case of following the child and | |
6254 | detaching the parent, the detach is done in the target- | |
6255 | independent follow fork code in infrun.c. We can't use | |
6256 | target_detach when detaching an unfollowed child because | |
6257 | the client side doesn't know anything about the child. */ | |
6258 | if (detach_fork && !follow_child) | |
6259 | { | |
6260 | /* Detach the fork child. */ | |
3a849a34 | 6261 | remote_detach_pid (child_ptid.pid ()); |
de0d863e DB |
6262 | } |
6263 | } | |
c906108c SS |
6264 | } |
6265 | ||
94585166 | 6266 | /* Target follow-exec function for remote targets. Save EXECD_PATHNAME |
294c36eb | 6267 | in the program space of the new inferior. */ |
94585166 | 6268 | |
f6ac5f3d | 6269 | void |
294c36eb SM |
6270 | remote_target::follow_exec (inferior *follow_inf, ptid_t ptid, |
6271 | const char *execd_pathname) | |
94585166 | 6272 | { |
294c36eb SM |
6273 | process_stratum_target::follow_exec (follow_inf, ptid, execd_pathname); |
6274 | ||
94585166 DB |
6275 | /* We know that this is a target file name, so if it has the "target:" |
6276 | prefix we strip it off before saving it in the program space. */ | |
6277 | if (is_target_filename (execd_pathname)) | |
6278 | execd_pathname += strlen (TARGET_SYSROOT_PREFIX); | |
6279 | ||
294c36eb | 6280 | set_pspace_remote_exec_file (follow_inf->pspace, execd_pathname); |
94585166 DB |
6281 | } |
6282 | ||
6ad8ae5c DJ |
6283 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
6284 | ||
f6ac5f3d PA |
6285 | void |
6286 | remote_target::disconnect (const char *args, int from_tty) | |
43ff13b4 | 6287 | { |
43ff13b4 | 6288 | if (args) |
2d717e4f | 6289 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 6290 | |
8020350c | 6291 | /* Make sure we unpush even the extended remote targets. Calling |
5b6d1e4f PA |
6292 | target_mourn_inferior won't unpush, and |
6293 | remote_target::mourn_inferior won't unpush if there is more than | |
6294 | one inferior left. */ | |
6295 | remote_unpush_target (this); | |
2d717e4f | 6296 | |
43ff13b4 | 6297 | if (from_tty) |
0426ad51 | 6298 | gdb_puts ("Ending remote debugging.\n"); |
43ff13b4 JM |
6299 | } |
6300 | ||
2d717e4f DJ |
6301 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
6302 | be chatty about it. */ | |
6303 | ||
f6ac5f3d PA |
6304 | void |
6305 | extended_remote_target::attach (const char *args, int from_tty) | |
2d717e4f DJ |
6306 | { |
6307 | struct remote_state *rs = get_remote_state (); | |
be86555c | 6308 | int pid; |
96ef3384 | 6309 | char *wait_status = NULL; |
2d717e4f | 6310 | |
74164c56 | 6311 | pid = parse_pid_to_attach (args); |
2d717e4f | 6312 | |
74164c56 JK |
6313 | /* Remote PID can be freely equal to getpid, do not check it here the same |
6314 | way as in other targets. */ | |
2d717e4f | 6315 | |
ff52c073 | 6316 | if (m_features.packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
6317 | error (_("This target does not support attaching to a process")); |
6318 | ||
bc521517 | 6319 | target_announce_attach (from_tty, pid); |
7cee1e54 | 6320 | |
8d64371b | 6321 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f | 6322 | putpkt (rs->buf); |
8d64371b | 6323 | getpkt (&rs->buf, 0); |
2d717e4f | 6324 | |
ff52c073 | 6325 | switch (m_features.packet_ok (rs->buf, PACKET_vAttach)) |
2d717e4f | 6326 | { |
4082afcc | 6327 | case PACKET_OK: |
6efcd9a8 | 6328 | if (!target_is_non_stop_p ()) |
74531fed PA |
6329 | { |
6330 | /* Save the reply for later. */ | |
8d64371b TT |
6331 | wait_status = (char *) alloca (strlen (rs->buf.data ()) + 1); |
6332 | strcpy (wait_status, rs->buf.data ()); | |
74531fed | 6333 | } |
8d64371b | 6334 | else if (strcmp (rs->buf.data (), "OK") != 0) |
74531fed | 6335 | error (_("Attaching to %s failed with: %s"), |
a068643d | 6336 | target_pid_to_str (ptid_t (pid)).c_str (), |
8d64371b | 6337 | rs->buf.data ()); |
4082afcc PA |
6338 | break; |
6339 | case PACKET_UNKNOWN: | |
6340 | error (_("This target does not support attaching to a process")); | |
6341 | default: | |
50fa3001 SDJ |
6342 | error (_("Attaching to %s failed"), |
6343 | target_pid_to_str (ptid_t (pid)).c_str ()); | |
2d717e4f | 6344 | } |
2d717e4f | 6345 | |
0ac55310 | 6346 | switch_to_inferior_no_thread (remote_add_inferior (false, pid, 1, 0)); |
bad34192 | 6347 | |
f2907e49 | 6348 | inferior_ptid = ptid_t (pid); |
79d7f229 | 6349 | |
6efcd9a8 | 6350 | if (target_is_non_stop_p ()) |
bad34192 | 6351 | { |
bad34192 | 6352 | /* Get list of threads. */ |
f6ac5f3d | 6353 | update_thread_list (); |
82f73884 | 6354 | |
0ac55310 PA |
6355 | thread_info *thread = first_thread_of_inferior (current_inferior ()); |
6356 | if (thread != nullptr) | |
6357 | switch_to_thread (thread); | |
bad34192 PA |
6358 | |
6359 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 6360 | record_currthread (rs, minus_one_ptid); |
bad34192 | 6361 | } |
74531fed | 6362 | else |
bad34192 | 6363 | { |
0ac55310 PA |
6364 | /* Now, if we have thread information, update the main thread's |
6365 | ptid. */ | |
6366 | ptid_t curr_ptid = remote_current_thread (ptid_t (pid)); | |
bad34192 | 6367 | |
b622494e AB |
6368 | /* Add the main thread to the thread list. We add the thread |
6369 | silently in this case (the final true parameter). */ | |
6370 | thread_info *thr = remote_add_thread (curr_ptid, true, true, true); | |
0ac55310 PA |
6371 | |
6372 | switch_to_thread (thr); | |
bad34192 | 6373 | } |
c0a2216e | 6374 | |
96ef3384 UW |
6375 | /* Next, if the target can specify a description, read it. We do |
6376 | this before anything involving memory or registers. */ | |
6377 | target_find_description (); | |
6378 | ||
6efcd9a8 | 6379 | if (!target_is_non_stop_p ()) |
74531fed PA |
6380 | { |
6381 | /* Use the previously fetched status. */ | |
6382 | gdb_assert (wait_status != NULL); | |
6383 | ||
4f626cad AB |
6384 | struct notif_event *reply |
6385 | = remote_notif_parse (this, ¬if_client_stop, wait_status); | |
74531fed | 6386 | |
4f626cad | 6387 | push_stop_reply ((struct stop_reply *) reply); |
74531fed PA |
6388 | } |
6389 | else | |
621cc310 PA |
6390 | { |
6391 | gdb_assert (wait_status == NULL); | |
6392 | ||
6393 | gdb_assert (target_can_async_p ()); | |
621cc310 | 6394 | } |
2d717e4f DJ |
6395 | } |
6396 | ||
b9c1d481 AS |
6397 | /* Implementation of the to_post_attach method. */ |
6398 | ||
f6ac5f3d PA |
6399 | void |
6400 | extended_remote_target::post_attach (int pid) | |
b9c1d481 | 6401 | { |
6efcd9a8 PA |
6402 | /* Get text, data & bss offsets. */ |
6403 | get_offsets (); | |
6404 | ||
b9c1d481 AS |
6405 | /* In certain cases GDB might not have had the chance to start |
6406 | symbol lookup up until now. This could happen if the debugged | |
6407 | binary is not using shared libraries, the vsyscall page is not | |
6408 | present (on Linux) and the binary itself hadn't changed since the | |
6409 | debugging process was started. */ | |
a42d7dd8 | 6410 | if (current_program_space->symfile_object_file != NULL) |
b9c1d481 AS |
6411 | remote_check_symbols(); |
6412 | } | |
6413 | ||
c906108c | 6414 | \f |
506fb367 DJ |
6415 | /* Check for the availability of vCont. This function should also check |
6416 | the response. */ | |
c906108c | 6417 | |
6b8edb51 PA |
6418 | void |
6419 | remote_target::remote_vcont_probe () | |
c906108c | 6420 | { |
6b8edb51 | 6421 | remote_state *rs = get_remote_state (); |
2e9f7625 | 6422 | char *buf; |
6d820c5c | 6423 | |
8d64371b | 6424 | strcpy (rs->buf.data (), "vCont?"); |
2e9f7625 | 6425 | putpkt (rs->buf); |
8d64371b TT |
6426 | getpkt (&rs->buf, 0); |
6427 | buf = rs->buf.data (); | |
c906108c | 6428 | |
506fb367 | 6429 | /* Make sure that the features we assume are supported. */ |
61012eef | 6430 | if (startswith (buf, "vCont")) |
506fb367 DJ |
6431 | { |
6432 | char *p = &buf[5]; | |
750ce8d1 | 6433 | int support_c, support_C; |
506fb367 | 6434 | |
750ce8d1 YQ |
6435 | rs->supports_vCont.s = 0; |
6436 | rs->supports_vCont.S = 0; | |
506fb367 DJ |
6437 | support_c = 0; |
6438 | support_C = 0; | |
d458bd84 | 6439 | rs->supports_vCont.t = 0; |
c1e36e3e | 6440 | rs->supports_vCont.r = 0; |
506fb367 DJ |
6441 | while (p && *p == ';') |
6442 | { | |
6443 | p++; | |
6444 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
750ce8d1 | 6445 | rs->supports_vCont.s = 1; |
506fb367 | 6446 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) |
750ce8d1 | 6447 | rs->supports_vCont.S = 1; |
506fb367 DJ |
6448 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) |
6449 | support_c = 1; | |
6450 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
6451 | support_C = 1; | |
74531fed | 6452 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 6453 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
6454 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
6455 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
6456 | |
6457 | p = strchr (p, ';'); | |
6458 | } | |
c906108c | 6459 | |
750ce8d1 YQ |
6460 | /* If c, and C are not all supported, we can't use vCont. Clearing |
6461 | BUF will make packet_ok disable the packet. */ | |
6462 | if (!support_c || !support_C) | |
506fb367 DJ |
6463 | buf[0] = 0; |
6464 | } | |
c906108c | 6465 | |
ff52c073 | 6466 | m_features.packet_ok (rs->buf, PACKET_vCont); |
506fb367 | 6467 | } |
c906108c | 6468 | |
0d8f58ca PA |
6469 | /* Helper function for building "vCont" resumptions. Write a |
6470 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
6471 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
6472 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
6473 | resumed thread should be single-stepped and/or signalled. If PTID | |
6474 | equals minus_one_ptid, then all threads are resumed; if PTID | |
d51926f0 PA |
6475 | represents a process, then all threads of the process are |
6476 | resumed. */ | |
0d8f58ca | 6477 | |
6b8edb51 PA |
6478 | char * |
6479 | remote_target::append_resumption (char *p, char *endp, | |
6480 | ptid_t ptid, int step, gdb_signal siggnal) | |
0d8f58ca PA |
6481 | { |
6482 | struct remote_state *rs = get_remote_state (); | |
6483 | ||
a493e3e2 | 6484 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 6485 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
6486 | else if (step |
6487 | /* GDB is willing to range step. */ | |
6488 | && use_range_stepping | |
6489 | /* Target supports range stepping. */ | |
6490 | && rs->supports_vCont.r | |
6491 | /* We don't currently support range stepping multiple | |
6492 | threads with a wildcard (though the protocol allows it, | |
6493 | so stubs shouldn't make an active effort to forbid | |
6494 | it). */ | |
ff52c073 | 6495 | && !(m_features.remote_multi_process_p () && ptid.is_pid ())) |
c1e36e3e PA |
6496 | { |
6497 | struct thread_info *tp; | |
6498 | ||
d7e15655 | 6499 | if (ptid == minus_one_ptid) |
c1e36e3e PA |
6500 | { |
6501 | /* If we don't know about the target thread's tid, then | |
6502 | we're resuming magic_null_ptid (see caller). */ | |
9213a6d7 | 6503 | tp = this->find_thread (magic_null_ptid); |
c1e36e3e PA |
6504 | } |
6505 | else | |
9213a6d7 | 6506 | tp = this->find_thread (ptid); |
c1e36e3e PA |
6507 | gdb_assert (tp != NULL); |
6508 | ||
6509 | if (tp->control.may_range_step) | |
6510 | { | |
6511 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
6512 | ||
6513 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
6514 | phex_nz (tp->control.step_range_start, | |
6515 | addr_size), | |
6516 | phex_nz (tp->control.step_range_end, | |
6517 | addr_size)); | |
6518 | } | |
6519 | else | |
6520 | p += xsnprintf (p, endp - p, ";s"); | |
6521 | } | |
0d8f58ca PA |
6522 | else if (step) |
6523 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 6524 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
6525 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
6526 | else | |
6527 | p += xsnprintf (p, endp - p, ";c"); | |
6528 | ||
ff52c073 | 6529 | if (m_features.remote_multi_process_p () && ptid.is_pid ()) |
0d8f58ca PA |
6530 | { |
6531 | ptid_t nptid; | |
6532 | ||
6533 | /* All (-1) threads of process. */ | |
184ea2f7 | 6534 | nptid = ptid_t (ptid.pid (), -1); |
0d8f58ca PA |
6535 | |
6536 | p += xsnprintf (p, endp - p, ":"); | |
6537 | p = write_ptid (p, endp, nptid); | |
6538 | } | |
d7e15655 | 6539 | else if (ptid != minus_one_ptid) |
0d8f58ca PA |
6540 | { |
6541 | p += xsnprintf (p, endp - p, ":"); | |
6542 | p = write_ptid (p, endp, ptid); | |
6543 | } | |
6544 | ||
6545 | return p; | |
6546 | } | |
6547 | ||
799a2abe PA |
6548 | /* Clear the thread's private info on resume. */ |
6549 | ||
6550 | static void | |
6551 | resume_clear_thread_private_info (struct thread_info *thread) | |
6552 | { | |
6553 | if (thread->priv != NULL) | |
6554 | { | |
7aabaf9d SM |
6555 | remote_thread_info *priv = get_remote_thread_info (thread); |
6556 | ||
6557 | priv->stop_reason = TARGET_STOPPED_BY_NO_REASON; | |
6558 | priv->watch_data_address = 0; | |
799a2abe PA |
6559 | } |
6560 | } | |
6561 | ||
e5ef252a PA |
6562 | /* Append a vCont continue-with-signal action for threads that have a |
6563 | non-zero stop signal. */ | |
6564 | ||
6b8edb51 PA |
6565 | char * |
6566 | remote_target::append_pending_thread_resumptions (char *p, char *endp, | |
6567 | ptid_t ptid) | |
e5ef252a | 6568 | { |
5b6d1e4f | 6569 | for (thread_info *thread : all_non_exited_threads (this, ptid)) |
08036331 | 6570 | if (inferior_ptid != thread->ptid |
1edb66d8 | 6571 | && thread->stop_signal () != GDB_SIGNAL_0) |
e5ef252a PA |
6572 | { |
6573 | p = append_resumption (p, endp, thread->ptid, | |
1edb66d8 SM |
6574 | 0, thread->stop_signal ()); |
6575 | thread->set_stop_signal (GDB_SIGNAL_0); | |
799a2abe | 6576 | resume_clear_thread_private_info (thread); |
e5ef252a PA |
6577 | } |
6578 | ||
6579 | return p; | |
6580 | } | |
6581 | ||
7b68ffbb PA |
6582 | /* Set the target running, using the packets that use Hc |
6583 | (c/s/C/S). */ | |
6584 | ||
6b8edb51 PA |
6585 | void |
6586 | remote_target::remote_resume_with_hc (ptid_t ptid, int step, | |
6587 | gdb_signal siggnal) | |
7b68ffbb PA |
6588 | { |
6589 | struct remote_state *rs = get_remote_state (); | |
7b68ffbb PA |
6590 | char *buf; |
6591 | ||
6592 | rs->last_sent_signal = siggnal; | |
6593 | rs->last_sent_step = step; | |
6594 | ||
6595 | /* The c/s/C/S resume packets use Hc, so set the continue | |
6596 | thread. */ | |
d7e15655 | 6597 | if (ptid == minus_one_ptid) |
7b68ffbb PA |
6598 | set_continue_thread (any_thread_ptid); |
6599 | else | |
6600 | set_continue_thread (ptid); | |
6601 | ||
5b6d1e4f | 6602 | for (thread_info *thread : all_non_exited_threads (this)) |
7b68ffbb PA |
6603 | resume_clear_thread_private_info (thread); |
6604 | ||
8d64371b | 6605 | buf = rs->buf.data (); |
6b8edb51 | 6606 | if (::execution_direction == EXEC_REVERSE) |
7b68ffbb PA |
6607 | { |
6608 | /* We don't pass signals to the target in reverse exec mode. */ | |
6609 | if (info_verbose && siggnal != GDB_SIGNAL_0) | |
6610 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), | |
6611 | siggnal); | |
6612 | ||
ff52c073 | 6613 | if (step && m_features.packet_support (PACKET_bs) == PACKET_DISABLE) |
7b68ffbb | 6614 | error (_("Remote reverse-step not supported.")); |
ff52c073 | 6615 | if (!step && m_features.packet_support (PACKET_bc) == PACKET_DISABLE) |
7b68ffbb PA |
6616 | error (_("Remote reverse-continue not supported.")); |
6617 | ||
6618 | strcpy (buf, step ? "bs" : "bc"); | |
6619 | } | |
6620 | else if (siggnal != GDB_SIGNAL_0) | |
6621 | { | |
6622 | buf[0] = step ? 'S' : 'C'; | |
6623 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); | |
6624 | buf[2] = tohex (((int) siggnal) & 0xf); | |
6625 | buf[3] = '\0'; | |
6626 | } | |
6627 | else | |
6628 | strcpy (buf, step ? "s" : "c"); | |
6629 | ||
6630 | putpkt (buf); | |
6631 | } | |
6632 | ||
d51926f0 PA |
6633 | /* Resume the remote inferior by using a "vCont" packet. SCOPE_PTID, |
6634 | STEP, and SIGGNAL have the same meaning as in target_resume. This | |
6635 | function returns non-zero iff it resumes the inferior. | |
44eaed12 | 6636 | |
7b68ffbb PA |
6637 | This function issues a strict subset of all possible vCont commands |
6638 | at the moment. */ | |
44eaed12 | 6639 | |
6b8edb51 | 6640 | int |
d51926f0 | 6641 | remote_target::remote_resume_with_vcont (ptid_t scope_ptid, int step, |
6b8edb51 | 6642 | enum gdb_signal siggnal) |
506fb367 DJ |
6643 | { |
6644 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
6645 | char *p; |
6646 | char *endp; | |
44eaed12 | 6647 | |
7b68ffbb | 6648 | /* No reverse execution actions defined for vCont. */ |
6b8edb51 | 6649 | if (::execution_direction == EXEC_REVERSE) |
7b68ffbb PA |
6650 | return 0; |
6651 | ||
ff52c073 | 6652 | if (m_features.packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 6653 | return 0; |
44eaed12 | 6654 | |
8d64371b TT |
6655 | p = rs->buf.data (); |
6656 | endp = p + get_remote_packet_size (); | |
82f73884 | 6657 | |
506fb367 DJ |
6658 | /* If we could generate a wider range of packets, we'd have to worry |
6659 | about overflowing BUF. Should there be a generic | |
6660 | "multi-part-packet" packet? */ | |
6661 | ||
0d8f58ca PA |
6662 | p += xsnprintf (p, endp - p, "vCont"); |
6663 | ||
d51926f0 | 6664 | if (scope_ptid == magic_null_ptid) |
c906108c | 6665 | { |
79d7f229 PA |
6666 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
6667 | so we don't have any TID numbers the inferior will | |
6668 | understand. Make sure to only send forms that do not specify | |
6669 | a TID. */ | |
a9cbf802 | 6670 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 6671 | } |
d51926f0 | 6672 | else if (scope_ptid == minus_one_ptid || scope_ptid.is_pid ()) |
506fb367 | 6673 | { |
0d8f58ca PA |
6674 | /* Resume all threads (of all processes, or of a single |
6675 | process), with preference for INFERIOR_PTID. This assumes | |
6676 | inferior_ptid belongs to the set of all threads we are about | |
6677 | to resume. */ | |
a493e3e2 | 6678 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 6679 | { |
0d8f58ca PA |
6680 | /* Step inferior_ptid, with or without signal. */ |
6681 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 6682 | } |
0d8f58ca | 6683 | |
e5ef252a PA |
6684 | /* Also pass down any pending signaled resumption for other |
6685 | threads not the current. */ | |
d51926f0 | 6686 | p = append_pending_thread_resumptions (p, endp, scope_ptid); |
e5ef252a | 6687 | |
0d8f58ca | 6688 | /* And continue others without a signal. */ |
d51926f0 | 6689 | append_resumption (p, endp, scope_ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
6690 | } |
6691 | else | |
506fb367 | 6692 | { |
d51926f0 PA |
6693 | /* Scheduler locking; resume only SCOPE_PTID. */ |
6694 | append_resumption (p, endp, scope_ptid, step, siggnal); | |
506fb367 | 6695 | } |
c906108c | 6696 | |
8d64371b | 6697 | gdb_assert (strlen (rs->buf.data ()) < get_remote_packet_size ()); |
82f73884 | 6698 | putpkt (rs->buf); |
506fb367 | 6699 | |
6efcd9a8 | 6700 | if (target_is_non_stop_p ()) |
74531fed PA |
6701 | { |
6702 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
6703 | reply will be reported asynchronously by means of a `%Stop' | |
6704 | notification. */ | |
8d64371b TT |
6705 | getpkt (&rs->buf, 0); |
6706 | if (strcmp (rs->buf.data (), "OK") != 0) | |
6707 | error (_("Unexpected vCont reply in non-stop mode: %s"), | |
6708 | rs->buf.data ()); | |
74531fed PA |
6709 | } |
6710 | ||
506fb367 | 6711 | return 1; |
c906108c | 6712 | } |
43ff13b4 | 6713 | |
506fb367 DJ |
6714 | /* Tell the remote machine to resume. */ |
6715 | ||
f6ac5f3d | 6716 | void |
d51926f0 | 6717 | remote_target::resume (ptid_t scope_ptid, int step, enum gdb_signal siggnal) |
43ff13b4 | 6718 | { |
d01949b6 | 6719 | struct remote_state *rs = get_remote_state (); |
43ff13b4 | 6720 | |
85ad3aaf PA |
6721 | /* When connected in non-stop mode, the core resumes threads |
6722 | individually. Resuming remote threads directly in target_resume | |
6723 | would thus result in sending one packet per thread. Instead, to | |
6724 | minimize roundtrip latency, here we just store the resume | |
c9d22089 SM |
6725 | request (put the thread in RESUMED_PENDING_VCONT state); the actual remote |
6726 | resumption will be done in remote_target::commit_resume, where we'll be | |
6727 | able to do vCont action coalescing. */ | |
f6ac5f3d | 6728 | if (target_is_non_stop_p () && ::execution_direction != EXEC_REVERSE) |
85ad3aaf | 6729 | { |
d51926f0 PA |
6730 | remote_thread_info *remote_thr |
6731 | = get_remote_thread_info (inferior_thread ()); | |
7aabaf9d | 6732 | |
c9d22089 | 6733 | /* We don't expect the core to ask to resume an already resumed (from |
287de656 | 6734 | its point of view) thread. */ |
a6c11cbb | 6735 | gdb_assert (remote_thr->get_resume_state () == resume_state::NOT_RESUMED); |
c9d22089 SM |
6736 | |
6737 | remote_thr->set_resumed_pending_vcont (step, siggnal); | |
d51926f0 PA |
6738 | |
6739 | /* There's actually nothing that says that the core can't | |
6740 | request a wildcard resume in non-stop mode, though. It's | |
6741 | just that we know it doesn't currently, so we don't bother | |
6742 | with it. */ | |
6743 | gdb_assert (scope_ptid == inferior_ptid); | |
85ad3aaf PA |
6744 | return; |
6745 | } | |
6746 | ||
722247f1 YQ |
6747 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
6748 | (explained in remote-notif.c:handle_notification) so | |
6749 | remote_notif_process is not called. We need find a place where | |
6750 | it is safe to start a 'vNotif' sequence. It is good to do it | |
6751 | before resuming inferior, because inferior was stopped and no RSP | |
6752 | traffic at that moment. */ | |
6efcd9a8 | 6753 | if (!target_is_non_stop_p ()) |
5965e028 | 6754 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 6755 | |
f6ac5f3d | 6756 | rs->last_resume_exec_dir = ::execution_direction; |
3a00c802 | 6757 | |
7b68ffbb | 6758 | /* Prefer vCont, and fallback to s/c/S/C, which use Hc. */ |
d51926f0 PA |
6759 | if (!remote_resume_with_vcont (scope_ptid, step, siggnal)) |
6760 | remote_resume_with_hc (scope_ptid, step, siggnal); | |
43ff13b4 | 6761 | |
c9d22089 | 6762 | /* Update resumed state tracked by the remote target. */ |
d51926f0 | 6763 | for (thread_info *tp : all_non_exited_threads (this, scope_ptid)) |
c9d22089 SM |
6764 | get_remote_thread_info (tp)->set_resumed (); |
6765 | ||
e24a49d8 PA |
6766 | /* We've just told the target to resume. The remote server will |
6767 | wait for the inferior to stop, and then send a stop reply. In | |
6768 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
6769 | because the stub wouldn't be ready to process it. This applies |
6770 | only to the base all-stop protocol, however. In non-stop (which | |
6771 | only supports vCont), the stub replies with an "OK", and is | |
6772 | immediate able to process further serial input. */ | |
6efcd9a8 | 6773 | if (!target_is_non_stop_p ()) |
74531fed | 6774 | rs->waiting_for_stop_reply = 1; |
43ff13b4 | 6775 | } |
85ad3aaf | 6776 | |
85ad3aaf PA |
6777 | /* Private per-inferior info for target remote processes. */ |
6778 | ||
089354bb | 6779 | struct remote_inferior : public private_inferior |
85ad3aaf PA |
6780 | { |
6781 | /* Whether we can send a wildcard vCont for this process. */ | |
089354bb | 6782 | bool may_wildcard_vcont = true; |
85ad3aaf PA |
6783 | }; |
6784 | ||
089354bb SM |
6785 | /* Get the remote private inferior data associated to INF. */ |
6786 | ||
6787 | static remote_inferior * | |
6788 | get_remote_inferior (inferior *inf) | |
6789 | { | |
6790 | if (inf->priv == NULL) | |
6791 | inf->priv.reset (new remote_inferior); | |
6792 | ||
98ed24fb | 6793 | return gdb::checked_static_cast<remote_inferior *> (inf->priv.get ()); |
089354bb SM |
6794 | } |
6795 | ||
f5db4863 | 6796 | /* Class used to track the construction of a vCont packet in the |
85ad3aaf PA |
6797 | outgoing packet buffer. This is used to send multiple vCont |
6798 | packets if we have more actions than would fit a single packet. */ | |
6799 | ||
f5db4863 | 6800 | class vcont_builder |
85ad3aaf | 6801 | { |
f5db4863 | 6802 | public: |
6b8edb51 PA |
6803 | explicit vcont_builder (remote_target *remote) |
6804 | : m_remote (remote) | |
f5db4863 PA |
6805 | { |
6806 | restart (); | |
6807 | } | |
6808 | ||
6809 | void flush (); | |
6810 | void push_action (ptid_t ptid, bool step, gdb_signal siggnal); | |
6811 | ||
6812 | private: | |
6813 | void restart (); | |
6814 | ||
6b8edb51 PA |
6815 | /* The remote target. */ |
6816 | remote_target *m_remote; | |
6817 | ||
85ad3aaf PA |
6818 | /* Pointer to the first action. P points here if no action has been |
6819 | appended yet. */ | |
f5db4863 | 6820 | char *m_first_action; |
85ad3aaf PA |
6821 | |
6822 | /* Where the next action will be appended. */ | |
f5db4863 | 6823 | char *m_p; |
85ad3aaf PA |
6824 | |
6825 | /* The end of the buffer. Must never write past this. */ | |
f5db4863 | 6826 | char *m_endp; |
85ad3aaf PA |
6827 | }; |
6828 | ||
6829 | /* Prepare the outgoing buffer for a new vCont packet. */ | |
6830 | ||
f5db4863 PA |
6831 | void |
6832 | vcont_builder::restart () | |
85ad3aaf | 6833 | { |
6b8edb51 | 6834 | struct remote_state *rs = m_remote->get_remote_state (); |
85ad3aaf | 6835 | |
8d64371b TT |
6836 | m_p = rs->buf.data (); |
6837 | m_endp = m_p + m_remote->get_remote_packet_size (); | |
f5db4863 PA |
6838 | m_p += xsnprintf (m_p, m_endp - m_p, "vCont"); |
6839 | m_first_action = m_p; | |
85ad3aaf PA |
6840 | } |
6841 | ||
6842 | /* If the vCont packet being built has any action, send it to the | |
6843 | remote end. */ | |
6844 | ||
f5db4863 PA |
6845 | void |
6846 | vcont_builder::flush () | |
85ad3aaf PA |
6847 | { |
6848 | struct remote_state *rs; | |
6849 | ||
f5db4863 | 6850 | if (m_p == m_first_action) |
85ad3aaf PA |
6851 | return; |
6852 | ||
6b8edb51 PA |
6853 | rs = m_remote->get_remote_state (); |
6854 | m_remote->putpkt (rs->buf); | |
8d64371b TT |
6855 | m_remote->getpkt (&rs->buf, 0); |
6856 | if (strcmp (rs->buf.data (), "OK") != 0) | |
6857 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf.data ()); | |
85ad3aaf PA |
6858 | } |
6859 | ||
6860 | /* The largest action is range-stepping, with its two addresses. This | |
6861 | is more than sufficient. If a new, bigger action is created, it'll | |
6862 | quickly trigger a failed assertion in append_resumption (and we'll | |
6863 | just bump this). */ | |
6864 | #define MAX_ACTION_SIZE 200 | |
6865 | ||
6866 | /* Append a new vCont action in the outgoing packet being built. If | |
6867 | the action doesn't fit the packet along with previous actions, push | |
6868 | what we've got so far to the remote end and start over a new vCont | |
6869 | packet (with the new action). */ | |
6870 | ||
f5db4863 PA |
6871 | void |
6872 | vcont_builder::push_action (ptid_t ptid, bool step, gdb_signal siggnal) | |
85ad3aaf PA |
6873 | { |
6874 | char buf[MAX_ACTION_SIZE + 1]; | |
85ad3aaf | 6875 | |
6b8edb51 PA |
6876 | char *endp = m_remote->append_resumption (buf, buf + sizeof (buf), |
6877 | ptid, step, siggnal); | |
85ad3aaf PA |
6878 | |
6879 | /* Check whether this new action would fit in the vCont packet along | |
6880 | with previous actions. If not, send what we've got so far and | |
6881 | start a new vCont packet. */ | |
f5db4863 PA |
6882 | size_t rsize = endp - buf; |
6883 | if (rsize > m_endp - m_p) | |
85ad3aaf | 6884 | { |
f5db4863 PA |
6885 | flush (); |
6886 | restart (); | |
85ad3aaf PA |
6887 | |
6888 | /* Should now fit. */ | |
f5db4863 | 6889 | gdb_assert (rsize <= m_endp - m_p); |
85ad3aaf PA |
6890 | } |
6891 | ||
f5db4863 PA |
6892 | memcpy (m_p, buf, rsize); |
6893 | m_p += rsize; | |
6894 | *m_p = '\0'; | |
85ad3aaf PA |
6895 | } |
6896 | ||
6897 | /* to_commit_resume implementation. */ | |
6898 | ||
f6ac5f3d | 6899 | void |
1192f124 | 6900 | remote_target::commit_resumed () |
85ad3aaf | 6901 | { |
85ad3aaf PA |
6902 | /* If connected in all-stop mode, we'd send the remote resume |
6903 | request directly from remote_resume. Likewise if | |
6904 | reverse-debugging, as there are no defined vCont actions for | |
6905 | reverse execution. */ | |
f6ac5f3d | 6906 | if (!target_is_non_stop_p () || ::execution_direction == EXEC_REVERSE) |
85ad3aaf PA |
6907 | return; |
6908 | ||
6909 | /* Try to send wildcard actions ("vCont;c" or "vCont;c:pPID.-1") | |
6910 | instead of resuming all threads of each process individually. | |
6911 | However, if any thread of a process must remain halted, we can't | |
6912 | send wildcard resumes and must send one action per thread. | |
6913 | ||
6914 | Care must be taken to not resume threads/processes the server | |
6915 | side already told us are stopped, but the core doesn't know about | |
6916 | yet, because the events are still in the vStopped notification | |
6917 | queue. For example: | |
6918 | ||
6919 | #1 => vCont s:p1.1;c | |
6920 | #2 <= OK | |
6921 | #3 <= %Stopped T05 p1.1 | |
6922 | #4 => vStopped | |
6923 | #5 <= T05 p1.2 | |
6924 | #6 => vStopped | |
6925 | #7 <= OK | |
6926 | #8 (infrun handles the stop for p1.1 and continues stepping) | |
6927 | #9 => vCont s:p1.1;c | |
6928 | ||
6929 | The last vCont above would resume thread p1.2 by mistake, because | |
6930 | the server has no idea that the event for p1.2 had not been | |
6931 | handled yet. | |
6932 | ||
6933 | The server side must similarly ignore resume actions for the | |
6934 | thread that has a pending %Stopped notification (and any other | |
6935 | threads with events pending), until GDB acks the notification | |
6936 | with vStopped. Otherwise, e.g., the following case is | |
6937 | mishandled: | |
6938 | ||
6939 | #1 => g (or any other packet) | |
6940 | #2 <= [registers] | |
6941 | #3 <= %Stopped T05 p1.2 | |
6942 | #4 => vCont s:p1.1;c | |
6943 | #5 <= OK | |
6944 | ||
6945 | Above, the server must not resume thread p1.2. GDB can't know | |
6946 | that p1.2 stopped until it acks the %Stopped notification, and | |
6947 | since from GDB's perspective all threads should be running, it | |
6948 | sends a "c" action. | |
6949 | ||
6950 | Finally, special care must also be given to handling fork/vfork | |
6951 | events. A (v)fork event actually tells us that two processes | |
6952 | stopped -- the parent and the child. Until we follow the fork, | |
6953 | we must not resume the child. Therefore, if we have a pending | |
6954 | fork follow, we must not send a global wildcard resume action | |
6955 | (vCont;c). We can still send process-wide wildcards though. */ | |
6956 | ||
6957 | /* Start by assuming a global wildcard (vCont;c) is possible. */ | |
2f63ec5c | 6958 | bool may_global_wildcard_vcont = true; |
85ad3aaf PA |
6959 | |
6960 | /* And assume every process is individually wildcard-able too. */ | |
5b6d1e4f | 6961 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 6962 | { |
089354bb SM |
6963 | remote_inferior *priv = get_remote_inferior (inf); |
6964 | ||
6965 | priv->may_wildcard_vcont = true; | |
85ad3aaf PA |
6966 | } |
6967 | ||
6968 | /* Check for any pending events (not reported or processed yet) and | |
6969 | disable process and global wildcard resumes appropriately. */ | |
6970 | check_pending_events_prevent_wildcard_vcont (&may_global_wildcard_vcont); | |
6971 | ||
1192f124 SM |
6972 | bool any_pending_vcont_resume = false; |
6973 | ||
5b6d1e4f | 6974 | for (thread_info *tp : all_non_exited_threads (this)) |
85ad3aaf | 6975 | { |
c9d22089 SM |
6976 | remote_thread_info *priv = get_remote_thread_info (tp); |
6977 | ||
85ad3aaf PA |
6978 | /* If a thread of a process is not meant to be resumed, then we |
6979 | can't wildcard that process. */ | |
a6c11cbb | 6980 | if (priv->get_resume_state () == resume_state::NOT_RESUMED) |
85ad3aaf | 6981 | { |
089354bb | 6982 | get_remote_inferior (tp->inf)->may_wildcard_vcont = false; |
85ad3aaf PA |
6983 | |
6984 | /* And if we can't wildcard a process, we can't wildcard | |
6985 | everything either. */ | |
2f63ec5c | 6986 | may_global_wildcard_vcont = false; |
85ad3aaf PA |
6987 | continue; |
6988 | } | |
6989 | ||
1192f124 SM |
6990 | if (priv->get_resume_state () == resume_state::RESUMED_PENDING_VCONT) |
6991 | any_pending_vcont_resume = true; | |
6992 | ||
85ad3aaf PA |
6993 | /* If a thread is the parent of an unfollowed fork, then we |
6994 | can't do a global wildcard, as that would resume the fork | |
6995 | child. */ | |
28561a65 | 6996 | if (thread_pending_fork_status (tp) != nullptr) |
2f63ec5c | 6997 | may_global_wildcard_vcont = false; |
85ad3aaf PA |
6998 | } |
6999 | ||
1192f124 SM |
7000 | /* We didn't have any resumed thread pending a vCont resume, so nothing to |
7001 | do. */ | |
7002 | if (!any_pending_vcont_resume) | |
7003 | return; | |
7004 | ||
85ad3aaf PA |
7005 | /* Now let's build the vCont packet(s). Actions must be appended |
7006 | from narrower to wider scopes (thread -> process -> global). If | |
7007 | we end up with too many actions for a single packet vcont_builder | |
7008 | flushes the current vCont packet to the remote side and starts a | |
7009 | new one. */ | |
6b8edb51 | 7010 | struct vcont_builder vcont_builder (this); |
85ad3aaf PA |
7011 | |
7012 | /* Threads first. */ | |
5b6d1e4f | 7013 | for (thread_info *tp : all_non_exited_threads (this)) |
85ad3aaf | 7014 | { |
7aabaf9d | 7015 | remote_thread_info *remote_thr = get_remote_thread_info (tp); |
85ad3aaf | 7016 | |
c9d22089 SM |
7017 | /* If the thread was previously vCont-resumed, no need to send a specific |
7018 | action for it. If we didn't receive a resume request for it, don't | |
7019 | send an action for it either. */ | |
a6c11cbb | 7020 | if (remote_thr->get_resume_state () != resume_state::RESUMED_PENDING_VCONT) |
85ad3aaf PA |
7021 | continue; |
7022 | ||
7023 | gdb_assert (!thread_is_in_step_over_chain (tp)); | |
7024 | ||
1192f124 | 7025 | /* We should never be commit-resuming a thread that has a stop reply. |
287de656 | 7026 | Otherwise, we would end up reporting a stop event for a thread while |
1192f124 SM |
7027 | it is running on the remote target. */ |
7028 | remote_state *rs = get_remote_state (); | |
7029 | for (const auto &stop_reply : rs->stop_reply_queue) | |
7030 | gdb_assert (stop_reply->ptid != tp->ptid); | |
7031 | ||
c9d22089 SM |
7032 | const resumed_pending_vcont_info &info |
7033 | = remote_thr->resumed_pending_vcont_info (); | |
85ad3aaf | 7034 | |
c9d22089 | 7035 | /* Check if we need to send a specific action for this thread. If not, |
287de656 | 7036 | it will be included in a wildcard resume instead. */ |
c9d22089 SM |
7037 | if (info.step || info.sig != GDB_SIGNAL_0 |
7038 | || !get_remote_inferior (tp->inf)->may_wildcard_vcont) | |
7039 | vcont_builder.push_action (tp->ptid, info.step, info.sig); | |
7040 | ||
7041 | remote_thr->set_resumed (); | |
85ad3aaf PA |
7042 | } |
7043 | ||
7044 | /* Now check whether we can send any process-wide wildcard. This is | |
7045 | to avoid sending a global wildcard in the case nothing is | |
7046 | supposed to be resumed. */ | |
2f63ec5c | 7047 | bool any_process_wildcard = false; |
85ad3aaf | 7048 | |
5b6d1e4f | 7049 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 7050 | { |
089354bb | 7051 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf | 7052 | { |
2f63ec5c | 7053 | any_process_wildcard = true; |
85ad3aaf PA |
7054 | break; |
7055 | } | |
7056 | } | |
7057 | ||
7058 | if (any_process_wildcard) | |
7059 | { | |
7060 | /* If all processes are wildcard-able, then send a single "c" | |
7061 | action, otherwise, send an "all (-1) threads of process" | |
7062 | continue action for each running process, if any. */ | |
7063 | if (may_global_wildcard_vcont) | |
7064 | { | |
f5db4863 PA |
7065 | vcont_builder.push_action (minus_one_ptid, |
7066 | false, GDB_SIGNAL_0); | |
85ad3aaf PA |
7067 | } |
7068 | else | |
7069 | { | |
5b6d1e4f | 7070 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 7071 | { |
089354bb | 7072 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf | 7073 | { |
f2907e49 | 7074 | vcont_builder.push_action (ptid_t (inf->pid), |
f5db4863 | 7075 | false, GDB_SIGNAL_0); |
85ad3aaf PA |
7076 | } |
7077 | } | |
7078 | } | |
7079 | } | |
7080 | ||
f5db4863 | 7081 | vcont_builder.flush (); |
85ad3aaf PA |
7082 | } |
7083 | ||
b4b1a226 SM |
7084 | /* Implementation of target_has_pending_events. */ |
7085 | ||
7086 | bool | |
7087 | remote_target::has_pending_events () | |
7088 | { | |
7089 | if (target_can_async_p ()) | |
7090 | { | |
7091 | remote_state *rs = get_remote_state (); | |
7092 | ||
7093 | if (async_event_handler_marked (rs->remote_async_inferior_event_token)) | |
7094 | return true; | |
7095 | ||
7096 | /* Note that BUFCNT can be negative, indicating sticky | |
7097 | error. */ | |
7098 | if (rs->remote_desc->bufcnt != 0) | |
7099 | return true; | |
7100 | } | |
7101 | return false; | |
7102 | } | |
7103 | ||
c906108c | 7104 | \f |
43ff13b4 | 7105 | |
74531fed PA |
7106 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
7107 | thread, all threads of a remote process, or all threads of all | |
7108 | processes. */ | |
7109 | ||
6b8edb51 PA |
7110 | void |
7111 | remote_target::remote_stop_ns (ptid_t ptid) | |
74531fed PA |
7112 | { |
7113 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
7114 | char *p = rs->buf.data (); |
7115 | char *endp = p + get_remote_packet_size (); | |
74531fed | 7116 | |
1192f124 SM |
7117 | /* If any thread that needs to stop was resumed but pending a vCont |
7118 | resume, generate a phony stop_reply. However, first check | |
7119 | whether the thread wasn't resumed with a signal. Generating a | |
7120 | phony stop in that case would result in losing the signal. */ | |
7121 | bool needs_commit = false; | |
7122 | for (thread_info *tp : all_non_exited_threads (this, ptid)) | |
7123 | { | |
7124 | remote_thread_info *remote_thr = get_remote_thread_info (tp); | |
7125 | ||
7126 | if (remote_thr->get_resume_state () | |
7127 | == resume_state::RESUMED_PENDING_VCONT) | |
7128 | { | |
7129 | const resumed_pending_vcont_info &info | |
7130 | = remote_thr->resumed_pending_vcont_info (); | |
7131 | if (info.sig != GDB_SIGNAL_0) | |
7132 | { | |
7133 | /* This signal must be forwarded to the inferior. We | |
7134 | could commit-resume just this thread, but its simpler | |
7135 | to just commit-resume everything. */ | |
7136 | needs_commit = true; | |
7137 | break; | |
7138 | } | |
7139 | } | |
7140 | } | |
7141 | ||
7142 | if (needs_commit) | |
7143 | commit_resumed (); | |
7144 | else | |
7145 | for (thread_info *tp : all_non_exited_threads (this, ptid)) | |
7146 | { | |
7147 | remote_thread_info *remote_thr = get_remote_thread_info (tp); | |
7148 | ||
7149 | if (remote_thr->get_resume_state () | |
7150 | == resume_state::RESUMED_PENDING_VCONT) | |
7151 | { | |
7152 | remote_debug_printf ("Enqueueing phony stop reply for thread pending " | |
96bbe3ef TT |
7153 | "vCont-resume (%d, %ld, %s)", tp->ptid.pid(), |
7154 | tp->ptid.lwp (), | |
7155 | pulongest (tp->ptid.tid ())); | |
1192f124 SM |
7156 | |
7157 | /* Check that the thread wasn't resumed with a signal. | |
7158 | Generating a phony stop would result in losing the | |
7159 | signal. */ | |
7160 | const resumed_pending_vcont_info &info | |
7161 | = remote_thr->resumed_pending_vcont_info (); | |
7162 | gdb_assert (info.sig == GDB_SIGNAL_0); | |
7163 | ||
7164 | stop_reply *sr = new stop_reply (); | |
7165 | sr->ptid = tp->ptid; | |
7166 | sr->rs = rs; | |
183be222 | 7167 | sr->ws.set_stopped (GDB_SIGNAL_0); |
1192f124 SM |
7168 | sr->arch = tp->inf->gdbarch; |
7169 | sr->stop_reason = TARGET_STOPPED_BY_NO_REASON; | |
7170 | sr->watch_data_address = 0; | |
7171 | sr->core = 0; | |
7172 | this->push_stop_reply (sr); | |
7173 | ||
7174 | /* Pretend that this thread was actually resumed on the | |
7175 | remote target, then stopped. If we leave it in the | |
7176 | RESUMED_PENDING_VCONT state and the commit_resumed | |
7177 | method is called while the stop reply is still in the | |
7178 | queue, we'll end up reporting a stop event to the core | |
7179 | for that thread while it is running on the remote | |
7180 | target... that would be bad. */ | |
7181 | remote_thr->set_resumed (); | |
7182 | } | |
7183 | } | |
7184 | ||
d458bd84 | 7185 | if (!rs->supports_vCont.t) |
74531fed PA |
7186 | error (_("Remote server does not support stopping threads")); |
7187 | ||
d7e15655 | 7188 | if (ptid == minus_one_ptid |
ff52c073 | 7189 | || (!m_features.remote_multi_process_p () && ptid.is_pid ())) |
74531fed PA |
7190 | p += xsnprintf (p, endp - p, "vCont;t"); |
7191 | else | |
7192 | { | |
7193 | ptid_t nptid; | |
7194 | ||
74531fed PA |
7195 | p += xsnprintf (p, endp - p, "vCont;t:"); |
7196 | ||
0e998d96 | 7197 | if (ptid.is_pid ()) |
74531fed | 7198 | /* All (-1) threads of process. */ |
184ea2f7 | 7199 | nptid = ptid_t (ptid.pid (), -1); |
74531fed PA |
7200 | else |
7201 | { | |
7202 | /* Small optimization: if we already have a stop reply for | |
7203 | this thread, no use in telling the stub we want this | |
7204 | stopped. */ | |
7205 | if (peek_stop_reply (ptid)) | |
7206 | return; | |
7207 | ||
7208 | nptid = ptid; | |
7209 | } | |
7210 | ||
a9cbf802 | 7211 | write_ptid (p, endp, nptid); |
74531fed PA |
7212 | } |
7213 | ||
7214 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
7215 | come in asynchronously by notification. */ | |
7216 | putpkt (rs->buf); | |
8d64371b TT |
7217 | getpkt (&rs->buf, 0); |
7218 | if (strcmp (rs->buf.data (), "OK") != 0) | |
a068643d | 7219 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid).c_str (), |
8d64371b | 7220 | rs->buf.data ()); |
74531fed PA |
7221 | } |
7222 | ||
bfedc46a PA |
7223 | /* All-stop version of target_interrupt. Sends a break or a ^C to |
7224 | interrupt the remote target. It is undefined which thread of which | |
7225 | process reports the interrupt. */ | |
74531fed | 7226 | |
6b8edb51 PA |
7227 | void |
7228 | remote_target::remote_interrupt_as () | |
74531fed PA |
7229 | { |
7230 | struct remote_state *rs = get_remote_state (); | |
7231 | ||
3a29589a DJ |
7232 | rs->ctrlc_pending_p = 1; |
7233 | ||
74531fed | 7234 | /* If the inferior is stopped already, but the core didn't know |
4f626cad | 7235 | about it yet, just ignore the request. The pending stop events |
74531fed | 7236 | will be collected in remote_wait. */ |
4f626cad | 7237 | if (stop_reply_queue_length () > 0) |
74531fed PA |
7238 | return; |
7239 | ||
9a7071a8 JB |
7240 | /* Send interrupt_sequence to remote target. */ |
7241 | send_interrupt_sequence (); | |
74531fed PA |
7242 | } |
7243 | ||
de979965 PA |
7244 | /* Non-stop version of target_interrupt. Uses `vCtrlC' to interrupt |
7245 | the remote target. It is undefined which thread of which process | |
e42de8c7 PA |
7246 | reports the interrupt. Throws an error if the packet is not |
7247 | supported by the server. */ | |
de979965 | 7248 | |
6b8edb51 PA |
7249 | void |
7250 | remote_target::remote_interrupt_ns () | |
de979965 PA |
7251 | { |
7252 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
7253 | char *p = rs->buf.data (); |
7254 | char *endp = p + get_remote_packet_size (); | |
de979965 PA |
7255 | |
7256 | xsnprintf (p, endp - p, "vCtrlC"); | |
7257 | ||
7258 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
7259 | come in asynchronously by notification. */ | |
7260 | putpkt (rs->buf); | |
8d64371b | 7261 | getpkt (&rs->buf, 0); |
de979965 | 7262 | |
ff52c073 | 7263 | switch (m_features.packet_ok (rs->buf, PACKET_vCtrlC)) |
de979965 PA |
7264 | { |
7265 | case PACKET_OK: | |
7266 | break; | |
7267 | case PACKET_UNKNOWN: | |
e42de8c7 | 7268 | error (_("No support for interrupting the remote target.")); |
de979965 | 7269 | case PACKET_ERROR: |
8d64371b | 7270 | error (_("Interrupting target failed: %s"), rs->buf.data ()); |
de979965 | 7271 | } |
de979965 PA |
7272 | } |
7273 | ||
bfedc46a | 7274 | /* Implement the to_stop function for the remote targets. */ |
74531fed | 7275 | |
f6ac5f3d PA |
7276 | void |
7277 | remote_target::stop (ptid_t ptid) | |
c906108c | 7278 | { |
2189c312 | 7279 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
c906108c | 7280 | |
6efcd9a8 | 7281 | if (target_is_non_stop_p ()) |
74531fed | 7282 | remote_stop_ns (ptid); |
c906108c | 7283 | else |
bfedc46a PA |
7284 | { |
7285 | /* We don't currently have a way to transparently pause the | |
7286 | remote target in all-stop mode. Interrupt it instead. */ | |
de979965 | 7287 | remote_interrupt_as (); |
bfedc46a PA |
7288 | } |
7289 | } | |
7290 | ||
7291 | /* Implement the to_interrupt function for the remote targets. */ | |
7292 | ||
f6ac5f3d PA |
7293 | void |
7294 | remote_target::interrupt () | |
bfedc46a | 7295 | { |
2189c312 | 7296 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
bfedc46a | 7297 | |
e42de8c7 PA |
7298 | if (target_is_non_stop_p ()) |
7299 | remote_interrupt_ns (); | |
bfedc46a | 7300 | else |
e42de8c7 | 7301 | remote_interrupt_as (); |
c906108c SS |
7302 | } |
7303 | ||
93692b58 PA |
7304 | /* Implement the to_pass_ctrlc function for the remote targets. */ |
7305 | ||
f6ac5f3d PA |
7306 | void |
7307 | remote_target::pass_ctrlc () | |
93692b58 | 7308 | { |
2189c312 | 7309 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
93692b58 | 7310 | |
2189c312 | 7311 | struct remote_state *rs = get_remote_state (); |
93692b58 PA |
7312 | |
7313 | /* If we're starting up, we're not fully synced yet. Quit | |
7314 | immediately. */ | |
7315 | if (rs->starting_up) | |
7316 | quit (); | |
7317 | /* If ^C has already been sent once, offer to disconnect. */ | |
7318 | else if (rs->ctrlc_pending_p) | |
7319 | interrupt_query (); | |
7320 | else | |
e671cd59 | 7321 | target_interrupt (); |
93692b58 PA |
7322 | } |
7323 | ||
c906108c SS |
7324 | /* Ask the user what to do when an interrupt is received. */ |
7325 | ||
6b8edb51 PA |
7326 | void |
7327 | remote_target::interrupt_query () | |
c906108c | 7328 | { |
abc56d60 | 7329 | struct remote_state *rs = get_remote_state (); |
c906108c | 7330 | |
abc56d60 | 7331 | if (rs->waiting_for_stop_reply && rs->ctrlc_pending_p) |
74531fed | 7332 | { |
abc56d60 PA |
7333 | if (query (_("The target is not responding to interrupt requests.\n" |
7334 | "Stop debugging it? "))) | |
74531fed | 7335 | { |
5b6d1e4f | 7336 | remote_unpush_target (this); |
abc56d60 | 7337 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
74531fed PA |
7338 | } |
7339 | } | |
abc56d60 PA |
7340 | else |
7341 | { | |
7342 | if (query (_("Interrupted while waiting for the program.\n" | |
7343 | "Give up waiting? "))) | |
7344 | quit (); | |
7345 | } | |
c906108c SS |
7346 | } |
7347 | ||
6426a772 JM |
7348 | /* Enable/disable target terminal ownership. Most targets can use |
7349 | terminal groups to control terminal ownership. Remote targets are | |
7350 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 7351 | is required. */ |
6426a772 | 7352 | |
f6ac5f3d PA |
7353 | void |
7354 | remote_target::terminal_inferior () | |
6426a772 | 7355 | { |
6426a772 JM |
7356 | /* NOTE: At this point we could also register our selves as the |
7357 | recipient of all input. Any characters typed could then be | |
23860348 | 7358 | passed on down to the target. */ |
6426a772 JM |
7359 | } |
7360 | ||
f6ac5f3d PA |
7361 | void |
7362 | remote_target::terminal_ours () | |
6426a772 | 7363 | { |
6426a772 JM |
7364 | } |
7365 | ||
176a6961 | 7366 | static void |
05be00a8 | 7367 | remote_console_output (const char *msg) |
c906108c | 7368 | { |
05be00a8 | 7369 | const char *p; |
c906108c | 7370 | |
c5aa993b | 7371 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
7372 | { |
7373 | char tb[2]; | |
7374 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 7375 | |
c906108c SS |
7376 | tb[0] = c; |
7377 | tb[1] = 0; | |
da5bd37e | 7378 | gdb_stdtarg->puts (tb); |
c906108c | 7379 | } |
da5bd37e | 7380 | gdb_stdtarg->flush (); |
00db5b94 | 7381 | } |
74531fed | 7382 | |
221e1a37 PA |
7383 | /* Return the length of the stop reply queue. */ |
7384 | ||
6b8edb51 PA |
7385 | int |
7386 | remote_target::stop_reply_queue_length () | |
221e1a37 | 7387 | { |
6b8edb51 | 7388 | remote_state *rs = get_remote_state (); |
953edf2b | 7389 | return rs->stop_reply_queue.size (); |
221e1a37 PA |
7390 | } |
7391 | ||
cb8c24b6 | 7392 | static void |
6b8edb51 | 7393 | remote_notif_stop_parse (remote_target *remote, |
42938c1a | 7394 | const notif_client *self, const char *buf, |
722247f1 YQ |
7395 | struct notif_event *event) |
7396 | { | |
6b8edb51 | 7397 | remote->remote_parse_stop_reply (buf, (struct stop_reply *) event); |
722247f1 YQ |
7398 | } |
7399 | ||
7400 | static void | |
6b8edb51 | 7401 | remote_notif_stop_ack (remote_target *remote, |
42938c1a | 7402 | const notif_client *self, const char *buf, |
722247f1 YQ |
7403 | struct notif_event *event) |
7404 | { | |
7405 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
7406 | ||
7407 | /* acknowledge */ | |
6b8edb51 | 7408 | putpkt (remote, self->ack_command); |
722247f1 | 7409 | |
b0083dd7 PA |
7410 | /* Kind can be TARGET_WAITKIND_IGNORE if we have meanwhile discarded |
7411 | the notification. It was left in the queue because we need to | |
7412 | acknowledge it and pull the rest of the notifications out. */ | |
183be222 | 7413 | if (stop_reply->ws.kind () != TARGET_WAITKIND_IGNORE) |
b0083dd7 | 7414 | remote->push_stop_reply (stop_reply); |
722247f1 YQ |
7415 | } |
7416 | ||
7417 | static int | |
6b8edb51 | 7418 | remote_notif_stop_can_get_pending_events (remote_target *remote, |
42938c1a | 7419 | const notif_client *self) |
722247f1 YQ |
7420 | { |
7421 | /* We can't get pending events in remote_notif_process for | |
7422 | notification stop, and we have to do this in remote_wait_ns | |
7423 | instead. If we fetch all queued events from stub, remote stub | |
7424 | may exit and we have no chance to process them back in | |
7425 | remote_wait_ns. */ | |
6b8edb51 PA |
7426 | remote_state *rs = remote->get_remote_state (); |
7427 | mark_async_event_handler (rs->remote_async_inferior_event_token); | |
722247f1 YQ |
7428 | return 0; |
7429 | } | |
7430 | ||
32603266 | 7431 | stop_reply::~stop_reply () |
722247f1 | 7432 | { |
32603266 TT |
7433 | for (cached_reg_t ® : regcache) |
7434 | xfree (reg.data); | |
722247f1 YQ |
7435 | } |
7436 | ||
32603266 TT |
7437 | static notif_event_up |
7438 | remote_notif_stop_alloc_reply () | |
722247f1 | 7439 | { |
32603266 | 7440 | return notif_event_up (new struct stop_reply ()); |
722247f1 YQ |
7441 | } |
7442 | ||
7443 | /* A client of notification Stop. */ | |
7444 | ||
42938c1a | 7445 | const notif_client notif_client_stop = |
722247f1 YQ |
7446 | { |
7447 | "Stop", | |
7448 | "vStopped", | |
7449 | remote_notif_stop_parse, | |
7450 | remote_notif_stop_ack, | |
7451 | remote_notif_stop_can_get_pending_events, | |
7452 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 7453 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
7454 | }; |
7455 | ||
cbb8991c DB |
7456 | /* If CONTEXT contains any fork child threads that have not been |
7457 | reported yet, remove them from the CONTEXT list. If such a | |
7458 | thread exists it is because we are stopped at a fork catchpoint | |
7459 | and have not yet called follow_fork, which will set up the | |
7460 | host-side data structures for the new process. */ | |
7461 | ||
6b8edb51 PA |
7462 | void |
7463 | remote_target::remove_new_fork_children (threads_listing_context *context) | |
cbb8991c | 7464 | { |
42938c1a | 7465 | const notif_client *notif = ¬if_client_stop; |
cbb8991c DB |
7466 | |
7467 | /* For any threads stopped at a fork event, remove the corresponding | |
7468 | fork child threads from the CONTEXT list. */ | |
5b6d1e4f | 7469 | for (thread_info *thread : all_non_exited_threads (this)) |
cbb8991c | 7470 | { |
28561a65 SM |
7471 | const target_waitstatus *ws = thread_pending_fork_status (thread); |
7472 | ||
7473 | if (ws == nullptr) | |
7474 | continue; | |
cbb8991c | 7475 | |
28561a65 | 7476 | context->remove_thread (ws->child_ptid ()); |
cbb8991c DB |
7477 | } |
7478 | ||
7479 | /* Check for any pending fork events (not reported or processed yet) | |
7480 | in process PID and remove those fork child threads from the | |
7481 | CONTEXT list as well. */ | |
7482 | remote_notif_get_pending_events (notif); | |
953edf2b | 7483 | for (auto &event : get_remote_state ()->stop_reply_queue) |
183be222 | 7484 | if (event->ws.kind () == TARGET_WAITKIND_FORKED |
3890f02a | 7485 | || event->ws.kind () == TARGET_WAITKIND_VFORKED) |
183be222 | 7486 | context->remove_thread (event->ws.child_ptid ()); |
3890f02a SM |
7487 | else if (event->ws.kind () == TARGET_WAITKIND_THREAD_EXITED) |
7488 | context->remove_thread (event->ptid); | |
85ad3aaf PA |
7489 | } |
7490 | ||
2f63ec5c AB |
7491 | /* Check whether any event pending in the vStopped queue would prevent a |
7492 | global or process wildcard vCont action. Set *may_global_wildcard to | |
7493 | false if we can't do a global wildcard (vCont;c), and clear the event | |
7494 | inferior's may_wildcard_vcont flag if we can't do a process-wide | |
7495 | wildcard resume (vCont;c:pPID.-1). */ | |
85ad3aaf | 7496 | |
6b8edb51 PA |
7497 | void |
7498 | remote_target::check_pending_events_prevent_wildcard_vcont | |
2f63ec5c | 7499 | (bool *may_global_wildcard) |
85ad3aaf | 7500 | { |
42938c1a | 7501 | const notif_client *notif = ¬if_client_stop; |
85ad3aaf PA |
7502 | |
7503 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
7504 | for (auto &event : get_remote_state ()->stop_reply_queue) |
7505 | { | |
183be222 SM |
7506 | if (event->ws.kind () == TARGET_WAITKIND_NO_RESUMED |
7507 | || event->ws.kind () == TARGET_WAITKIND_NO_HISTORY) | |
953edf2b | 7508 | continue; |
85ad3aaf | 7509 | |
183be222 SM |
7510 | if (event->ws.kind () == TARGET_WAITKIND_FORKED |
7511 | || event->ws.kind () == TARGET_WAITKIND_VFORKED) | |
2f63ec5c | 7512 | *may_global_wildcard = false; |
722247f1 | 7513 | |
953edf2b TT |
7514 | /* This may be the first time we heard about this process. |
7515 | Regardless, we must not do a global wildcard resume, otherwise | |
7516 | we'd resume this process too. */ | |
2f63ec5c | 7517 | *may_global_wildcard = false; |
323fd5b9 PA |
7518 | if (event->ptid != null_ptid) |
7519 | { | |
7520 | inferior *inf = find_inferior_ptid (this, event->ptid); | |
7521 | if (inf != NULL) | |
7522 | get_remote_inferior (inf)->may_wildcard_vcont = false; | |
7523 | } | |
722247f1 | 7524 | } |
722247f1 YQ |
7525 | } |
7526 | ||
f48ff2a7 | 7527 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 7528 | |
6b8edb51 PA |
7529 | void |
7530 | remote_target::discard_pending_stop_replies (struct inferior *inf) | |
c906108c | 7531 | { |
f48ff2a7 YQ |
7532 | struct stop_reply *reply; |
7533 | struct remote_state *rs = get_remote_state (); | |
7534 | struct remote_notif_state *rns = rs->notif_state; | |
7535 | ||
7536 | /* This function can be notified when an inferior exists. When the | |
7537 | target is not remote, the notification state is NULL. */ | |
7538 | if (rs->remote_desc == NULL) | |
7539 | return; | |
7540 | ||
7541 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 7542 | |
74531fed | 7543 | /* Discard the in-flight notification. */ |
e99b03dc | 7544 | if (reply != NULL && reply->ptid.pid () == inf->pid) |
74531fed | 7545 | { |
b0083dd7 PA |
7546 | /* Leave the notification pending, since the server expects that |
7547 | we acknowledge it with vStopped. But clear its contents, so | |
7548 | that later on when we acknowledge it, we also discard it. */ | |
df5ad102 SM |
7549 | remote_debug_printf |
7550 | ("discarding in-flight notification: ptid: %s, ws: %s\n", | |
7551 | reply->ptid.to_string().c_str(), | |
7552 | reply->ws.to_string ().c_str ()); | |
183be222 | 7553 | reply->ws.set_ignore (); |
74531fed | 7554 | } |
c906108c | 7555 | |
74531fed PA |
7556 | /* Discard the stop replies we have already pulled with |
7557 | vStopped. */ | |
953edf2b TT |
7558 | auto iter = std::remove_if (rs->stop_reply_queue.begin (), |
7559 | rs->stop_reply_queue.end (), | |
7560 | [=] (const stop_reply_up &event) | |
7561 | { | |
7562 | return event->ptid.pid () == inf->pid; | |
7563 | }); | |
df5ad102 SM |
7564 | for (auto it = iter; it != rs->stop_reply_queue.end (); ++it) |
7565 | remote_debug_printf | |
7566 | ("discarding queued stop reply: ptid: %s, ws: %s\n", | |
1720b64f AB |
7567 | (*it)->ptid.to_string().c_str(), |
7568 | (*it)->ws.to_string ().c_str ()); | |
953edf2b | 7569 | rs->stop_reply_queue.erase (iter, rs->stop_reply_queue.end ()); |
bcc75809 YQ |
7570 | } |
7571 | ||
7572 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 | 7573 | |
6b8edb51 PA |
7574 | void |
7575 | remote_target::discard_pending_stop_replies_in_queue () | |
f48ff2a7 | 7576 | { |
6b8edb51 | 7577 | remote_state *rs = get_remote_state (); |
f48ff2a7 | 7578 | |
f48ff2a7 YQ |
7579 | /* Discard the stop replies we have already pulled with |
7580 | vStopped. */ | |
953edf2b TT |
7581 | auto iter = std::remove_if (rs->stop_reply_queue.begin (), |
7582 | rs->stop_reply_queue.end (), | |
7583 | [=] (const stop_reply_up &event) | |
7584 | { | |
7585 | return event->rs == rs; | |
7586 | }); | |
7587 | rs->stop_reply_queue.erase (iter, rs->stop_reply_queue.end ()); | |
74531fed | 7588 | } |
43ff13b4 | 7589 | |
722247f1 YQ |
7590 | /* Remove the first reply in 'stop_reply_queue' which matches |
7591 | PTID. */ | |
2e9f7625 | 7592 | |
6b8edb51 PA |
7593 | struct stop_reply * |
7594 | remote_target::remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 7595 | { |
953edf2b | 7596 | remote_state *rs = get_remote_state (); |
722247f1 | 7597 | |
953edf2b TT |
7598 | auto iter = std::find_if (rs->stop_reply_queue.begin (), |
7599 | rs->stop_reply_queue.end (), | |
7600 | [=] (const stop_reply_up &event) | |
7601 | { | |
7602 | return event->ptid.matches (ptid); | |
7603 | }); | |
7604 | struct stop_reply *result; | |
7605 | if (iter == rs->stop_reply_queue.end ()) | |
7606 | result = nullptr; | |
7607 | else | |
7608 | { | |
7609 | result = iter->release (); | |
7610 | rs->stop_reply_queue.erase (iter); | |
7611 | } | |
722247f1 | 7612 | |
722247f1 | 7613 | if (notif_debug) |
6cb06a8c TT |
7614 | gdb_printf (gdb_stdlog, |
7615 | "notif: discard queued event: 'Stop' in %s\n", | |
7616 | ptid.to_string ().c_str ()); | |
a744cf53 | 7617 | |
953edf2b | 7618 | return result; |
74531fed | 7619 | } |
75c99385 | 7620 | |
74531fed PA |
7621 | /* Look for a queued stop reply belonging to PTID. If one is found, |
7622 | remove it from the queue, and return it. Returns NULL if none is | |
7623 | found. If there are still queued events left to process, tell the | |
7624 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 7625 | |
6b8edb51 PA |
7626 | struct stop_reply * |
7627 | remote_target::queued_stop_reply (ptid_t ptid) | |
74531fed | 7628 | { |
953edf2b | 7629 | remote_state *rs = get_remote_state (); |
722247f1 | 7630 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 7631 | |
4f626cad | 7632 | if (!rs->stop_reply_queue.empty () && target_can_async_p ()) |
6b8edb51 | 7633 | { |
6b8edb51 PA |
7634 | /* There's still at least an event left. */ |
7635 | mark_async_event_handler (rs->remote_async_inferior_event_token); | |
7636 | } | |
74531fed | 7637 | |
722247f1 | 7638 | return r; |
74531fed PA |
7639 | } |
7640 | ||
7641 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
7642 | know that we now have at least one queued event left to pass to the | |
7643 | core side, tell the event loop to get back to target_wait soon. */ | |
7644 | ||
6b8edb51 PA |
7645 | void |
7646 | remote_target::push_stop_reply (struct stop_reply *new_event) | |
74531fed | 7647 | { |
6b8edb51 | 7648 | remote_state *rs = get_remote_state (); |
953edf2b | 7649 | rs->stop_reply_queue.push_back (stop_reply_up (new_event)); |
74531fed | 7650 | |
722247f1 | 7651 | if (notif_debug) |
6cb06a8c TT |
7652 | gdb_printf (gdb_stdlog, |
7653 | "notif: push 'Stop' %s to queue %d\n", | |
7654 | new_event->ptid.to_string ().c_str (), | |
7655 | int (rs->stop_reply_queue.size ())); | |
74531fed | 7656 | |
4f626cad AB |
7657 | /* Mark the pending event queue only if async mode is currently enabled. |
7658 | If async mode is not currently enabled, then, if it later becomes | |
7659 | enabled, and there are events in this queue, we will mark the event | |
7660 | token at that point, see remote_target::async. */ | |
7661 | if (target_is_async_p ()) | |
7662 | mark_async_event_handler (rs->remote_async_inferior_event_token); | |
74531fed PA |
7663 | } |
7664 | ||
7665 | /* Returns true if we have a stop reply for PTID. */ | |
7666 | ||
6b8edb51 PA |
7667 | int |
7668 | remote_target::peek_stop_reply (ptid_t ptid) | |
74531fed | 7669 | { |
6b8edb51 | 7670 | remote_state *rs = get_remote_state (); |
953edf2b TT |
7671 | for (auto &event : rs->stop_reply_queue) |
7672 | if (ptid == event->ptid | |
183be222 | 7673 | && event->ws.kind () == TARGET_WAITKIND_STOPPED) |
953edf2b TT |
7674 | return 1; |
7675 | return 0; | |
74531fed PA |
7676 | } |
7677 | ||
26d56a93 SL |
7678 | /* Helper for remote_parse_stop_reply. Return nonzero if the substring |
7679 | starting with P and ending with PEND matches PREFIX. */ | |
7680 | ||
7681 | static int | |
7682 | strprefix (const char *p, const char *pend, const char *prefix) | |
7683 | { | |
7684 | for ( ; p < pend; p++, prefix++) | |
7685 | if (*p != *prefix) | |
7686 | return 0; | |
7687 | return *prefix == '\0'; | |
7688 | } | |
7689 | ||
74531fed PA |
7690 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
7691 | result is stored in EVENT, or throws an error. */ | |
7692 | ||
6b8edb51 | 7693 | void |
bb277751 | 7694 | remote_target::remote_parse_stop_reply (const char *buf, stop_reply *event) |
74531fed | 7695 | { |
5cd63fda | 7696 | remote_arch_state *rsa = NULL; |
74531fed | 7697 | ULONGEST addr; |
256642e8 | 7698 | const char *p; |
94585166 | 7699 | int skipregs = 0; |
74531fed PA |
7700 | |
7701 | event->ptid = null_ptid; | |
bcc75809 | 7702 | event->rs = get_remote_state (); |
183be222 | 7703 | event->ws.set_ignore (); |
f7e6eed5 | 7704 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
32603266 | 7705 | event->regcache.clear (); |
dc146f7c | 7706 | event->core = -1; |
74531fed PA |
7707 | |
7708 | switch (buf[0]) | |
7709 | { | |
7710 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
7711 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
7712 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
7713 | ss = signal number | |
7714 | n... = register number | |
7715 | r... = register contents | |
7716 | */ | |
7717 | ||
7718 | p = &buf[3]; /* after Txx */ | |
7719 | while (*p) | |
7720 | { | |
256642e8 | 7721 | const char *p1; |
cea39f65 | 7722 | int fieldsize; |
43ff13b4 | 7723 | |
1f10ba14 PA |
7724 | p1 = strchr (p, ':'); |
7725 | if (p1 == NULL) | |
7726 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
7727 | Packet: '%s'\n"), | |
7728 | p, buf); | |
7729 | if (p == p1) | |
7730 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
7731 | Packet: '%s'\n"), | |
7732 | p, buf); | |
3c3bea1c | 7733 | |
1f10ba14 PA |
7734 | /* Some "registers" are actually extended stop information. |
7735 | Note if you're adding a new entry here: GDB 7.9 and | |
7736 | earlier assume that all register "numbers" that start | |
7737 | with an hex digit are real register numbers. Make sure | |
7738 | the server only sends such a packet if it knows the | |
7739 | client understands it. */ | |
c8e38a49 | 7740 | |
26d56a93 | 7741 | if (strprefix (p, p1, "thread")) |
1f10ba14 | 7742 | event->ptid = read_ptid (++p1, &p); |
82075af2 JS |
7743 | else if (strprefix (p, p1, "syscall_entry")) |
7744 | { | |
7745 | ULONGEST sysno; | |
7746 | ||
82075af2 | 7747 | p = unpack_varlen_hex (++p1, &sysno); |
183be222 | 7748 | event->ws.set_syscall_entry ((int) sysno); |
82075af2 JS |
7749 | } |
7750 | else if (strprefix (p, p1, "syscall_return")) | |
7751 | { | |
7752 | ULONGEST sysno; | |
7753 | ||
82075af2 | 7754 | p = unpack_varlen_hex (++p1, &sysno); |
183be222 | 7755 | event->ws.set_syscall_return ((int) sysno); |
82075af2 | 7756 | } |
26d56a93 SL |
7757 | else if (strprefix (p, p1, "watch") |
7758 | || strprefix (p, p1, "rwatch") | |
7759 | || strprefix (p, p1, "awatch")) | |
cea39f65 | 7760 | { |
f7e6eed5 | 7761 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
7762 | p = unpack_varlen_hex (++p1, &addr); |
7763 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 7764 | } |
26d56a93 | 7765 | else if (strprefix (p, p1, "swbreak")) |
f7e6eed5 PA |
7766 | { |
7767 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
7768 | ||
7769 | /* Make sure the stub doesn't forget to indicate support | |
7770 | with qSupported. */ | |
ff52c073 CS |
7771 | if (m_features.packet_support (PACKET_swbreak_feature) |
7772 | != PACKET_ENABLE) | |
f7e6eed5 PA |
7773 | error (_("Unexpected swbreak stop reason")); |
7774 | ||
7775 | /* The value part is documented as "must be empty", | |
7776 | though we ignore it, in case we ever decide to make | |
7777 | use of it in a backward compatible way. */ | |
8424cc97 | 7778 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7779 | } |
26d56a93 | 7780 | else if (strprefix (p, p1, "hwbreak")) |
f7e6eed5 PA |
7781 | { |
7782 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
7783 | ||
7784 | /* Make sure the stub doesn't forget to indicate support | |
7785 | with qSupported. */ | |
ff52c073 CS |
7786 | if (m_features.packet_support (PACKET_hwbreak_feature) |
7787 | != PACKET_ENABLE) | |
f7e6eed5 PA |
7788 | error (_("Unexpected hwbreak stop reason")); |
7789 | ||
7790 | /* See above. */ | |
8424cc97 | 7791 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7792 | } |
26d56a93 | 7793 | else if (strprefix (p, p1, "library")) |
cea39f65 | 7794 | { |
183be222 | 7795 | event->ws.set_loaded (); |
8424cc97 | 7796 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7797 | } |
26d56a93 | 7798 | else if (strprefix (p, p1, "replaylog")) |
1f10ba14 | 7799 | { |
183be222 | 7800 | event->ws.set_no_history (); |
1f10ba14 PA |
7801 | /* p1 will indicate "begin" or "end", but it makes |
7802 | no difference for now, so ignore it. */ | |
8424cc97 | 7803 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7804 | } |
26d56a93 | 7805 | else if (strprefix (p, p1, "core")) |
1f10ba14 PA |
7806 | { |
7807 | ULONGEST c; | |
a744cf53 | 7808 | |
1f10ba14 PA |
7809 | p = unpack_varlen_hex (++p1, &c); |
7810 | event->core = c; | |
cea39f65 | 7811 | } |
26d56a93 | 7812 | else if (strprefix (p, p1, "fork")) |
183be222 | 7813 | event->ws.set_forked (read_ptid (++p1, &p)); |
26d56a93 | 7814 | else if (strprefix (p, p1, "vfork")) |
183be222 | 7815 | event->ws.set_vforked (read_ptid (++p1, &p)); |
26d56a93 | 7816 | else if (strprefix (p, p1, "vforkdone")) |
c269dbdb | 7817 | { |
183be222 | 7818 | event->ws.set_vfork_done (); |
8424cc97 | 7819 | p = strchrnul (p1 + 1, ';'); |
c269dbdb | 7820 | } |
6ab24463 | 7821 | else if (strprefix (p, p1, "exec")) |
94585166 DB |
7822 | { |
7823 | ULONGEST ignored; | |
94585166 DB |
7824 | int pathlen; |
7825 | ||
7826 | /* Determine the length of the execd pathname. */ | |
7827 | p = unpack_varlen_hex (++p1, &ignored); | |
7828 | pathlen = (p - p1) / 2; | |
7829 | ||
7830 | /* Save the pathname for event reporting and for | |
7831 | the next run command. */ | |
183be222 | 7832 | gdb::unique_xmalloc_ptr<char> pathname |
c6321f19 TT |
7833 | ((char *) xmalloc (pathlen + 1)); |
7834 | hex2bin (p1, (gdb_byte *) pathname.get (), pathlen); | |
183be222 | 7835 | pathname.get ()[pathlen] = '\0'; |
94585166 DB |
7836 | |
7837 | /* This is freed during event handling. */ | |
183be222 | 7838 | event->ws.set_execd (std::move (pathname)); |
94585166 DB |
7839 | |
7840 | /* Skip the registers included in this packet, since | |
7841 | they may be for an architecture different from the | |
7842 | one used by the original program. */ | |
7843 | skipregs = 1; | |
7844 | } | |
65706a29 PA |
7845 | else if (strprefix (p, p1, "create")) |
7846 | { | |
183be222 | 7847 | event->ws.set_thread_created (); |
8424cc97 | 7848 | p = strchrnul (p1 + 1, ';'); |
65706a29 | 7849 | } |
cea39f65 MS |
7850 | else |
7851 | { | |
1f10ba14 | 7852 | ULONGEST pnum; |
256642e8 | 7853 | const char *p_temp; |
1f10ba14 | 7854 | |
94585166 DB |
7855 | if (skipregs) |
7856 | { | |
8424cc97 | 7857 | p = strchrnul (p1 + 1, ';'); |
94585166 DB |
7858 | p++; |
7859 | continue; | |
7860 | } | |
7861 | ||
1f10ba14 PA |
7862 | /* Maybe a real ``P'' register number. */ |
7863 | p_temp = unpack_varlen_hex (p, &pnum); | |
7864 | /* If the first invalid character is the colon, we got a | |
7865 | register number. Otherwise, it's an unknown stop | |
7866 | reason. */ | |
7867 | if (p_temp == p1) | |
7868 | { | |
5cd63fda PA |
7869 | /* If we haven't parsed the event's thread yet, find |
7870 | it now, in order to find the architecture of the | |
7871 | reported expedited registers. */ | |
7872 | if (event->ptid == null_ptid) | |
7873 | { | |
24ed6739 AB |
7874 | /* If there is no thread-id information then leave |
7875 | the event->ptid as null_ptid. Later in | |
7876 | process_stop_reply we will pick a suitable | |
7877 | thread. */ | |
5cd63fda PA |
7878 | const char *thr = strstr (p1 + 1, ";thread:"); |
7879 | if (thr != NULL) | |
7880 | event->ptid = read_ptid (thr + strlen (";thread:"), | |
7881 | NULL); | |
5cd63fda PA |
7882 | } |
7883 | ||
7884 | if (rsa == NULL) | |
7885 | { | |
5b6d1e4f PA |
7886 | inferior *inf |
7887 | = (event->ptid == null_ptid | |
7888 | ? NULL | |
7889 | : find_inferior_ptid (this, event->ptid)); | |
5cd63fda PA |
7890 | /* If this is the first time we learn anything |
7891 | about this process, skip the registers | |
7892 | included in this packet, since we don't yet | |
7893 | know which architecture to use to parse them. | |
7894 | We'll determine the architecture later when | |
7895 | we process the stop reply and retrieve the | |
7896 | target description, via | |
7897 | remote_notice_new_inferior -> | |
7898 | post_create_inferior. */ | |
7899 | if (inf == NULL) | |
7900 | { | |
7901 | p = strchrnul (p1 + 1, ';'); | |
7902 | p++; | |
7903 | continue; | |
7904 | } | |
7905 | ||
7906 | event->arch = inf->gdbarch; | |
9d6eea31 | 7907 | rsa = event->rs->get_remote_arch_state (event->arch); |
5cd63fda PA |
7908 | } |
7909 | ||
7910 | packet_reg *reg | |
7911 | = packet_reg_from_pnum (event->arch, rsa, pnum); | |
1f10ba14 | 7912 | cached_reg_t cached_reg; |
43ff13b4 | 7913 | |
1f10ba14 PA |
7914 | if (reg == NULL) |
7915 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 7916 | Packet: '%s'\n"), |
1f10ba14 | 7917 | hex_string (pnum), p, buf); |
c8e38a49 | 7918 | |
1f10ba14 | 7919 | cached_reg.num = reg->regnum; |
d1dff226 | 7920 | cached_reg.data = (gdb_byte *) |
5cd63fda | 7921 | xmalloc (register_size (event->arch, reg->regnum)); |
4100683b | 7922 | |
1f10ba14 PA |
7923 | p = p1 + 1; |
7924 | fieldsize = hex2bin (p, cached_reg.data, | |
5cd63fda | 7925 | register_size (event->arch, reg->regnum)); |
1f10ba14 | 7926 | p += 2 * fieldsize; |
5cd63fda | 7927 | if (fieldsize < register_size (event->arch, reg->regnum)) |
1f10ba14 | 7928 | warning (_("Remote reply is too short: %s"), buf); |
74531fed | 7929 | |
32603266 | 7930 | event->regcache.push_back (cached_reg); |
1f10ba14 PA |
7931 | } |
7932 | else | |
7933 | { | |
7934 | /* Not a number. Silently skip unknown optional | |
7935 | info. */ | |
8424cc97 | 7936 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7937 | } |
cea39f65 | 7938 | } |
c8e38a49 | 7939 | |
cea39f65 MS |
7940 | if (*p != ';') |
7941 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
7942 | buf, p); | |
7943 | ++p; | |
7944 | } | |
5b5596ff | 7945 | |
183be222 | 7946 | if (event->ws.kind () != TARGET_WAITKIND_IGNORE) |
5b5596ff PA |
7947 | break; |
7948 | ||
c8e38a49 PA |
7949 | /* fall through */ |
7950 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
7951 | { |
7952 | int sig; | |
7953 | ||
3a09da41 PA |
7954 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); |
7955 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
183be222 | 7956 | event->ws.set_stopped ((enum gdb_signal) sig); |
3a09da41 | 7957 | else |
183be222 | 7958 | event->ws.set_stopped (GDB_SIGNAL_UNKNOWN); |
3a09da41 | 7959 | } |
c8e38a49 | 7960 | break; |
65706a29 PA |
7961 | case 'w': /* Thread exited. */ |
7962 | { | |
65706a29 PA |
7963 | ULONGEST value; |
7964 | ||
65706a29 | 7965 | p = unpack_varlen_hex (&buf[1], &value); |
183be222 | 7966 | event->ws.set_thread_exited (value); |
65706a29 PA |
7967 | if (*p != ';') |
7968 | error (_("stop reply packet badly formatted: %s"), buf); | |
974eac9d | 7969 | event->ptid = read_ptid (++p, NULL); |
65706a29 PA |
7970 | break; |
7971 | } | |
c8e38a49 PA |
7972 | case 'W': /* Target exited. */ |
7973 | case 'X': | |
7974 | { | |
c8e38a49 | 7975 | ULONGEST value; |
82f73884 | 7976 | |
c8e38a49 PA |
7977 | /* GDB used to accept only 2 hex chars here. Stubs should |
7978 | only send more if they detect GDB supports multi-process | |
7979 | support. */ | |
7980 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 7981 | |
c8e38a49 PA |
7982 | if (buf[0] == 'W') |
7983 | { | |
7984 | /* The remote process exited. */ | |
183be222 | 7985 | event->ws.set_exited (value); |
c8e38a49 PA |
7986 | } |
7987 | else | |
7988 | { | |
7989 | /* The remote process exited with a signal. */ | |
3a09da41 | 7990 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
183be222 | 7991 | event->ws.set_signalled ((enum gdb_signal) value); |
3a09da41 | 7992 | else |
183be222 | 7993 | event->ws.set_signalled (GDB_SIGNAL_UNKNOWN); |
c8e38a49 | 7994 | } |
82f73884 | 7995 | |
e7af6c70 TBA |
7996 | /* If no process is specified, return null_ptid, and let the |
7997 | caller figure out the right process to use. */ | |
7998 | int pid = 0; | |
c8e38a49 PA |
7999 | if (*p == '\0') |
8000 | ; | |
8001 | else if (*p == ';') | |
8002 | { | |
8003 | p++; | |
8004 | ||
0b24eb2d | 8005 | if (*p == '\0') |
82f73884 | 8006 | ; |
61012eef | 8007 | else if (startswith (p, "process:")) |
82f73884 | 8008 | { |
c8e38a49 | 8009 | ULONGEST upid; |
a744cf53 | 8010 | |
c8e38a49 PA |
8011 | p += sizeof ("process:") - 1; |
8012 | unpack_varlen_hex (p, &upid); | |
8013 | pid = upid; | |
82f73884 PA |
8014 | } |
8015 | else | |
8016 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 8017 | } |
c8e38a49 PA |
8018 | else |
8019 | error (_("unknown stop reply packet: %s"), buf); | |
f2907e49 | 8020 | event->ptid = ptid_t (pid); |
74531fed PA |
8021 | } |
8022 | break; | |
f2faf941 | 8023 | case 'N': |
183be222 | 8024 | event->ws.set_no_resumed (); |
f2faf941 PA |
8025 | event->ptid = minus_one_ptid; |
8026 | break; | |
74531fed | 8027 | } |
74531fed PA |
8028 | } |
8029 | ||
722247f1 YQ |
8030 | /* When the stub wants to tell GDB about a new notification reply, it |
8031 | sends a notification (%Stop, for example). Those can come it at | |
8032 | any time, hence, we have to make sure that any pending | |
8033 | putpkt/getpkt sequence we're making is finished, before querying | |
8034 | the stub for more events with the corresponding ack command | |
8035 | (vStopped, for example). E.g., if we started a vStopped sequence | |
8036 | immediately upon receiving the notification, something like this | |
8037 | could happen: | |
74531fed PA |
8038 | |
8039 | 1.1) --> Hg 1 | |
8040 | 1.2) <-- OK | |
8041 | 1.3) --> g | |
8042 | 1.4) <-- %Stop | |
8043 | 1.5) --> vStopped | |
8044 | 1.6) <-- (registers reply to step #1.3) | |
8045 | ||
8046 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
8047 | query. | |
8048 | ||
796cb314 | 8049 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
8050 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
8051 | doing whatever we were doing: | |
8052 | ||
8053 | 2.1) --> Hg 1 | |
8054 | 2.2) <-- OK | |
8055 | 2.3) --> g | |
8056 | 2.4) <-- %Stop | |
8057 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
8058 | 2.5) <-- (registers reply to step #2.3) | |
8059 | ||
85102364 | 8060 | Eventually after step #2.5, we return to the event loop, which |
74531fed PA |
8061 | notices there's an event on the |
8062 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
8063 | associated callback --- the function below. At this point, we're | |
8064 | always safe to start a vStopped sequence. : | |
8065 | ||
8066 | 2.6) --> vStopped | |
8067 | 2.7) <-- T05 thread:2 | |
8068 | 2.8) --> vStopped | |
8069 | 2.9) --> OK | |
8070 | */ | |
8071 | ||
722247f1 | 8072 | void |
42938c1a | 8073 | remote_target::remote_notif_get_pending_events (const notif_client *nc) |
74531fed PA |
8074 | { |
8075 | struct remote_state *rs = get_remote_state (); | |
74531fed | 8076 | |
f48ff2a7 | 8077 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 8078 | { |
722247f1 | 8079 | if (notif_debug) |
6cb06a8c TT |
8080 | gdb_printf (gdb_stdlog, |
8081 | "notif: process: '%s' ack pending event\n", | |
8082 | nc->name); | |
74531fed | 8083 | |
722247f1 | 8084 | /* acknowledge */ |
8d64371b TT |
8085 | nc->ack (this, nc, rs->buf.data (), |
8086 | rs->notif_state->pending_event[nc->id]); | |
f48ff2a7 | 8087 | rs->notif_state->pending_event[nc->id] = NULL; |
74531fed PA |
8088 | |
8089 | while (1) | |
8090 | { | |
8d64371b TT |
8091 | getpkt (&rs->buf, 0); |
8092 | if (strcmp (rs->buf.data (), "OK") == 0) | |
74531fed PA |
8093 | break; |
8094 | else | |
8d64371b | 8095 | remote_notif_ack (this, nc, rs->buf.data ()); |
74531fed PA |
8096 | } |
8097 | } | |
722247f1 YQ |
8098 | else |
8099 | { | |
8100 | if (notif_debug) | |
6cb06a8c TT |
8101 | gdb_printf (gdb_stdlog, |
8102 | "notif: process: '%s' no pending reply\n", | |
8103 | nc->name); | |
722247f1 | 8104 | } |
74531fed PA |
8105 | } |
8106 | ||
6b8edb51 PA |
8107 | /* Wrapper around remote_target::remote_notif_get_pending_events to |
8108 | avoid having to export the whole remote_target class. */ | |
8109 | ||
8110 | void | |
42938c1a | 8111 | remote_notif_get_pending_events (remote_target *remote, const notif_client *nc) |
6b8edb51 PA |
8112 | { |
8113 | remote->remote_notif_get_pending_events (nc); | |
8114 | } | |
8115 | ||
8f66807b AB |
8116 | /* Called from process_stop_reply when the stop packet we are responding |
8117 | to didn't include a process-id or thread-id. STATUS is the stop event | |
8118 | we are responding to. | |
8119 | ||
8120 | It is the task of this function to select a suitable thread (or process) | |
8121 | and return its ptid, this is the thread (or process) we will assume the | |
8122 | stop event came from. | |
8123 | ||
8124 | In some cases there isn't really any choice about which thread (or | |
8125 | process) is selected, a basic remote with a single process containing a | |
8126 | single thread might choose not to send any process-id or thread-id in | |
8127 | its stop packets, this function will select and return the one and only | |
8128 | thread. | |
8129 | ||
8130 | However, if a target supports multiple threads (or processes) and still | |
8131 | doesn't include a thread-id (or process-id) in its stop packet then | |
8132 | first, this is a badly behaving target, and second, we're going to have | |
8133 | to select a thread (or process) at random and use that. This function | |
8134 | will print a warning to the user if it detects that there is the | |
8135 | possibility that GDB is guessing which thread (or process) to | |
8136 | report. | |
8137 | ||
8138 | Note that this is called before GDB fetches the updated thread list from the | |
8139 | target. So it's possible for the stop reply to be ambiguous and for GDB to | |
8140 | not realize it. For example, if there's initially one thread, the target | |
8141 | spawns a second thread, and then sends a stop reply without an id that | |
8142 | concerns the first thread. GDB will assume the stop reply is about the | |
8143 | first thread - the only thread it knows about - without printing a warning. | |
8144 | Anyway, if the remote meant for the stop reply to be about the second thread, | |
8145 | then it would be really broken, because GDB doesn't know about that thread | |
8146 | yet. */ | |
74531fed | 8147 | |
6b8edb51 | 8148 | ptid_t |
8f66807b | 8149 | remote_target::select_thread_for_ambiguous_stop_reply |
c272a98c | 8150 | (const target_waitstatus &status) |
74531fed | 8151 | { |
4351271e AB |
8152 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
8153 | ||
8f66807b AB |
8154 | /* Some stop events apply to all threads in an inferior, while others |
8155 | only apply to a single thread. */ | |
8156 | bool process_wide_stop | |
c272a98c SM |
8157 | = (status.kind () == TARGET_WAITKIND_EXITED |
8158 | || status.kind () == TARGET_WAITKIND_SIGNALLED); | |
74531fed | 8159 | |
4351271e AB |
8160 | remote_debug_printf ("process_wide_stop = %d", process_wide_stop); |
8161 | ||
8f66807b AB |
8162 | thread_info *first_resumed_thread = nullptr; |
8163 | bool ambiguous = false; | |
74531fed | 8164 | |
8f66807b AB |
8165 | /* Consider all non-exited threads of the target, find the first resumed |
8166 | one. */ | |
8167 | for (thread_info *thr : all_non_exited_threads (this)) | |
24ed6739 | 8168 | { |
8f66807b | 8169 | remote_thread_info *remote_thr = get_remote_thread_info (thr); |
cada5fc9 | 8170 | |
a6c11cbb | 8171 | if (remote_thr->get_resume_state () != resume_state::RESUMED) |
8f66807b | 8172 | continue; |
24ed6739 | 8173 | |
8f66807b AB |
8174 | if (first_resumed_thread == nullptr) |
8175 | first_resumed_thread = thr; | |
8176 | else if (!process_wide_stop | |
8177 | || first_resumed_thread->ptid.pid () != thr->ptid.pid ()) | |
8178 | ambiguous = true; | |
8179 | } | |
8180 | ||
b622494e AB |
8181 | gdb_assert (first_resumed_thread != nullptr); |
8182 | ||
4351271e AB |
8183 | remote_debug_printf ("first resumed thread is %s", |
8184 | pid_to_str (first_resumed_thread->ptid).c_str ()); | |
8185 | remote_debug_printf ("is this guess ambiguous? = %d", ambiguous); | |
8186 | ||
8f66807b AB |
8187 | /* Warn if the remote target is sending ambiguous stop replies. */ |
8188 | if (ambiguous) | |
8189 | { | |
8190 | static bool warned = false; | |
8191 | ||
8192 | if (!warned) | |
8193 | { | |
8194 | /* If you are seeing this warning then the remote target has | |
8195 | stopped without specifying a thread-id, but the target | |
8196 | does have multiple threads (or inferiors), and so GDB is | |
8197 | having to guess which thread stopped. | |
8198 | ||
8199 | Examples of what might cause this are the target sending | |
8200 | and 'S' stop packet, or a 'T' stop packet and not | |
8201 | including a thread-id. | |
8202 | ||
8203 | Additionally, the target might send a 'W' or 'X packet | |
8204 | without including a process-id, when the target has | |
8205 | multiple running inferiors. */ | |
8206 | if (process_wide_stop) | |
8207 | warning (_("multi-inferior target stopped without " | |
8208 | "sending a process-id, using first " | |
8209 | "non-exited inferior")); | |
cada5fc9 | 8210 | else |
8f66807b AB |
8211 | warning (_("multi-threaded target stopped without " |
8212 | "sending a thread-id, using first " | |
8213 | "non-exited thread")); | |
8214 | warned = true; | |
24ed6739 | 8215 | } |
24ed6739 | 8216 | } |
74531fed | 8217 | |
8f66807b AB |
8218 | /* If this is a stop for all threads then don't use a particular threads |
8219 | ptid, instead create a new ptid where only the pid field is set. */ | |
8220 | if (process_wide_stop) | |
8221 | return ptid_t (first_resumed_thread->ptid.pid ()); | |
8222 | else | |
8223 | return first_resumed_thread->ptid; | |
8224 | } | |
8225 | ||
8226 | /* Called when it is decided that STOP_REPLY holds the info of the | |
8227 | event that is to be returned to the core. This function always | |
8228 | destroys STOP_REPLY. */ | |
8229 | ||
8230 | ptid_t | |
8231 | remote_target::process_stop_reply (struct stop_reply *stop_reply, | |
8232 | struct target_waitstatus *status) | |
8233 | { | |
8234 | *status = stop_reply->ws; | |
8235 | ptid_t ptid = stop_reply->ptid; | |
8236 | ||
8237 | /* If no thread/process was reported by the stub then select a suitable | |
8238 | thread/process. */ | |
8239 | if (ptid == null_ptid) | |
c272a98c | 8240 | ptid = select_thread_for_ambiguous_stop_reply (*status); |
8f66807b AB |
8241 | gdb_assert (ptid != null_ptid); |
8242 | ||
183be222 SM |
8243 | if (status->kind () != TARGET_WAITKIND_EXITED |
8244 | && status->kind () != TARGET_WAITKIND_SIGNALLED | |
8245 | && status->kind () != TARGET_WAITKIND_NO_RESUMED) | |
74531fed | 8246 | { |
5f3563ea | 8247 | /* Expedited registers. */ |
32603266 | 8248 | if (!stop_reply->regcache.empty ()) |
5f3563ea | 8249 | { |
217f1f79 | 8250 | struct regcache *regcache |
5b6d1e4f | 8251 | = get_thread_arch_regcache (this, ptid, stop_reply->arch); |
5f3563ea | 8252 | |
32603266 TT |
8253 | for (cached_reg_t ® : stop_reply->regcache) |
8254 | { | |
8255 | regcache->raw_supply (reg.num, reg.data); | |
8256 | xfree (reg.data); | |
8257 | } | |
d1dff226 | 8258 | |
32603266 | 8259 | stop_reply->regcache.clear (); |
5f3563ea | 8260 | } |
74531fed | 8261 | |
8a82de58 | 8262 | remote_notice_new_inferior (ptid, false); |
5b6d1e4f | 8263 | remote_thread_info *remote_thr = get_remote_thread_info (this, ptid); |
799a2abe PA |
8264 | remote_thr->core = stop_reply->core; |
8265 | remote_thr->stop_reason = stop_reply->stop_reason; | |
8266 | remote_thr->watch_data_address = stop_reply->watch_data_address; | |
c9d22089 SM |
8267 | |
8268 | if (target_is_non_stop_p ()) | |
8269 | { | |
8270 | /* If the target works in non-stop mode, a stop-reply indicates that | |
8271 | only this thread stopped. */ | |
8272 | remote_thr->set_not_resumed (); | |
8273 | } | |
8274 | else | |
8275 | { | |
8276 | /* If the target works in all-stop mode, a stop-reply indicates that | |
8277 | all the target's threads stopped. */ | |
8278 | for (thread_info *tp : all_non_exited_threads (this)) | |
8279 | get_remote_thread_info (tp)->set_not_resumed (); | |
8280 | } | |
74531fed PA |
8281 | } |
8282 | ||
32603266 | 8283 | delete stop_reply; |
74531fed PA |
8284 | return ptid; |
8285 | } | |
8286 | ||
8287 | /* The non-stop mode version of target_wait. */ | |
8288 | ||
6b8edb51 | 8289 | ptid_t |
b60cea74 TT |
8290 | remote_target::wait_ns (ptid_t ptid, struct target_waitstatus *status, |
8291 | target_wait_flags options) | |
74531fed PA |
8292 | { |
8293 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
8294 | struct stop_reply *stop_reply; |
8295 | int ret; | |
fee9eda9 | 8296 | int is_notif = 0; |
74531fed PA |
8297 | |
8298 | /* If in non-stop mode, get out of getpkt even if a | |
8299 | notification is received. */ | |
8300 | ||
8d64371b | 8301 | ret = getpkt_or_notif_sane (&rs->buf, 0 /* forever */, &is_notif); |
74531fed PA |
8302 | while (1) |
8303 | { | |
fee9eda9 | 8304 | if (ret != -1 && !is_notif) |
74531fed PA |
8305 | switch (rs->buf[0]) |
8306 | { | |
8307 | case 'E': /* Error of some sort. */ | |
8308 | /* We're out of sync with the target now. Did it continue | |
8309 | or not? We can't tell which thread it was in non-stop, | |
8310 | so just ignore this. */ | |
8d64371b | 8311 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
74531fed PA |
8312 | break; |
8313 | case 'O': /* Console output. */ | |
8d64371b | 8314 | remote_console_output (&rs->buf[1]); |
74531fed PA |
8315 | break; |
8316 | default: | |
8d64371b | 8317 | warning (_("Invalid remote reply: %s"), rs->buf.data ()); |
74531fed PA |
8318 | break; |
8319 | } | |
8320 | ||
8321 | /* Acknowledge a pending stop reply that may have arrived in the | |
8322 | mean time. */ | |
f48ff2a7 | 8323 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 8324 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
8325 | |
8326 | /* If indeed we noticed a stop reply, we're done. */ | |
8327 | stop_reply = queued_stop_reply (ptid); | |
8328 | if (stop_reply != NULL) | |
8329 | return process_stop_reply (stop_reply, status); | |
8330 | ||
47608cb1 | 8331 | /* Still no event. If we're just polling for an event, then |
74531fed | 8332 | return to the event loop. */ |
47608cb1 | 8333 | if (options & TARGET_WNOHANG) |
74531fed | 8334 | { |
183be222 | 8335 | status->set_ignore (); |
74531fed PA |
8336 | return minus_one_ptid; |
8337 | } | |
8338 | ||
47608cb1 | 8339 | /* Otherwise do a blocking wait. */ |
8d64371b | 8340 | ret = getpkt_or_notif_sane (&rs->buf, 1 /* forever */, &is_notif); |
74531fed PA |
8341 | } |
8342 | } | |
8343 | ||
31ba933e PA |
8344 | /* Return the first resumed thread. */ |
8345 | ||
8346 | static ptid_t | |
5b6d1e4f | 8347 | first_remote_resumed_thread (remote_target *target) |
31ba933e | 8348 | { |
5b6d1e4f | 8349 | for (thread_info *tp : all_non_exited_threads (target, minus_one_ptid)) |
7846f3aa | 8350 | if (tp->resumed ()) |
31ba933e PA |
8351 | return tp->ptid; |
8352 | return null_ptid; | |
8353 | } | |
8354 | ||
74531fed PA |
8355 | /* Wait until the remote machine stops, then return, storing status in |
8356 | STATUS just as `wait' would. */ | |
8357 | ||
6b8edb51 | 8358 | ptid_t |
b60cea74 TT |
8359 | remote_target::wait_as (ptid_t ptid, target_waitstatus *status, |
8360 | target_wait_flags options) | |
74531fed PA |
8361 | { |
8362 | struct remote_state *rs = get_remote_state (); | |
74531fed | 8363 | ptid_t event_ptid = null_ptid; |
cea39f65 | 8364 | char *buf; |
74531fed PA |
8365 | struct stop_reply *stop_reply; |
8366 | ||
47608cb1 PA |
8367 | again: |
8368 | ||
183be222 | 8369 | status->set_ignore (); |
74531fed PA |
8370 | |
8371 | stop_reply = queued_stop_reply (ptid); | |
8372 | if (stop_reply != NULL) | |
4f626cad AB |
8373 | { |
8374 | /* None of the paths that push a stop reply onto the queue should | |
8375 | have set the waiting_for_stop_reply flag. */ | |
8376 | gdb_assert (!rs->waiting_for_stop_reply); | |
8377 | event_ptid = process_stop_reply (stop_reply, status); | |
8378 | } | |
74531fed PA |
8379 | else |
8380 | { | |
567420d1 | 8381 | int forever = ((options & TARGET_WNOHANG) == 0 |
6b8edb51 | 8382 | && rs->wait_forever_enabled_p); |
567420d1 PA |
8383 | |
8384 | if (!rs->waiting_for_stop_reply) | |
8385 | { | |
183be222 | 8386 | status->set_no_resumed (); |
567420d1 PA |
8387 | return minus_one_ptid; |
8388 | } | |
74531fed | 8389 | |
74531fed PA |
8390 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
8391 | _never_ wait for ever -> test on target_is_async_p(). | |
8392 | However, before we do that we need to ensure that the caller | |
8393 | knows how to take the target into/out of async mode. */ | |
4f626cad AB |
8394 | int is_notif; |
8395 | int ret = getpkt_or_notif_sane (&rs->buf, forever, &is_notif); | |
722247f1 YQ |
8396 | |
8397 | /* GDB gets a notification. Return to core as this event is | |
8398 | not interesting. */ | |
8399 | if (ret != -1 && is_notif) | |
8400 | return minus_one_ptid; | |
567420d1 PA |
8401 | |
8402 | if (ret == -1 && (options & TARGET_WNOHANG) != 0) | |
8403 | return minus_one_ptid; | |
74531fed | 8404 | |
4f626cad | 8405 | buf = rs->buf.data (); |
74531fed | 8406 | |
4f626cad AB |
8407 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
8408 | an 'F' or 'O' packet. */ | |
8409 | if (buf[0] != 'F' && buf[0] != 'O') | |
8410 | rs->ctrlc_pending_p = 0; | |
3a29589a | 8411 | |
4f626cad AB |
8412 | switch (buf[0]) |
8413 | { | |
8414 | case 'E': /* Error of some sort. */ | |
8415 | /* We're out of sync with the target now. Did it continue or | |
8416 | not? Not is more likely, so report a stop. */ | |
8417 | rs->waiting_for_stop_reply = 0; | |
29090fb6 | 8418 | |
4f626cad AB |
8419 | warning (_("Remote failure reply: %s"), buf); |
8420 | status->set_stopped (GDB_SIGNAL_0); | |
8421 | break; | |
8422 | case 'F': /* File-I/O request. */ | |
8423 | /* GDB may access the inferior memory while handling the File-I/O | |
8424 | request, but we don't want GDB accessing memory while waiting | |
8425 | for a stop reply. See the comments in putpkt_binary. Set | |
8426 | waiting_for_stop_reply to 0 temporarily. */ | |
8427 | rs->waiting_for_stop_reply = 0; | |
8428 | remote_fileio_request (this, buf, rs->ctrlc_pending_p); | |
8429 | rs->ctrlc_pending_p = 0; | |
8430 | /* GDB handled the File-I/O request, and the target is running | |
8431 | again. Keep waiting for events. */ | |
8432 | rs->waiting_for_stop_reply = 1; | |
8433 | break; | |
8434 | case 'N': case 'T': case 'S': case 'X': case 'W': | |
8435 | { | |
8436 | /* There is a stop reply to handle. */ | |
8437 | rs->waiting_for_stop_reply = 0; | |
29090fb6 | 8438 | |
4f626cad AB |
8439 | stop_reply |
8440 | = (struct stop_reply *) remote_notif_parse (this, | |
8441 | ¬if_client_stop, | |
8442 | rs->buf.data ()); | |
74531fed | 8443 | |
4f626cad AB |
8444 | event_ptid = process_stop_reply (stop_reply, status); |
8445 | break; | |
8446 | } | |
8447 | case 'O': /* Console output. */ | |
8448 | remote_console_output (buf + 1); | |
8449 | break; | |
8450 | case '\0': | |
8451 | if (rs->last_sent_signal != GDB_SIGNAL_0) | |
8452 | { | |
8453 | /* Zero length reply means that we tried 'S' or 'C' and the | |
8454 | remote system doesn't support it. */ | |
8455 | target_terminal::ours_for_output (); | |
6cb06a8c | 8456 | gdb_printf |
4f626cad AB |
8457 | ("Can't send signals to this remote system. %s not sent.\n", |
8458 | gdb_signal_to_name (rs->last_sent_signal)); | |
8459 | rs->last_sent_signal = GDB_SIGNAL_0; | |
8460 | target_terminal::inferior (); | |
8461 | ||
8462 | strcpy (buf, rs->last_sent_step ? "s" : "c"); | |
8463 | putpkt (buf); | |
8464 | break; | |
8465 | } | |
8466 | /* fallthrough */ | |
8467 | default: | |
8468 | warning (_("Invalid remote reply: %s"), buf); | |
c8e38a49 | 8469 | break; |
43ff13b4 JM |
8470 | } |
8471 | } | |
c8e38a49 | 8472 | |
183be222 | 8473 | if (status->kind () == TARGET_WAITKIND_NO_RESUMED) |
f2faf941 | 8474 | return minus_one_ptid; |
183be222 | 8475 | else if (status->kind () == TARGET_WAITKIND_IGNORE) |
47608cb1 PA |
8476 | { |
8477 | /* Nothing interesting happened. If we're doing a non-blocking | |
8478 | poll, we're done. Otherwise, go back to waiting. */ | |
8479 | if (options & TARGET_WNOHANG) | |
8480 | return minus_one_ptid; | |
8481 | else | |
8482 | goto again; | |
8483 | } | |
183be222 SM |
8484 | else if (status->kind () != TARGET_WAITKIND_EXITED |
8485 | && status->kind () != TARGET_WAITKIND_SIGNALLED) | |
82f73884 | 8486 | { |
d7e15655 | 8487 | if (event_ptid != null_ptid) |
47f8a51d | 8488 | record_currthread (rs, event_ptid); |
82f73884 | 8489 | else |
5b6d1e4f | 8490 | event_ptid = first_remote_resumed_thread (this); |
43ff13b4 | 8491 | } |
74531fed | 8492 | else |
e7af6c70 TBA |
8493 | { |
8494 | /* A process exit. Invalidate our notion of current thread. */ | |
8495 | record_currthread (rs, minus_one_ptid); | |
8496 | /* It's possible that the packet did not include a pid. */ | |
8497 | if (event_ptid == null_ptid) | |
5b6d1e4f | 8498 | event_ptid = first_remote_resumed_thread (this); |
e7af6c70 TBA |
8499 | /* EVENT_PTID could still be NULL_PTID. Double-check. */ |
8500 | if (event_ptid == null_ptid) | |
8501 | event_ptid = magic_null_ptid; | |
8502 | } | |
79d7f229 | 8503 | |
82f73884 | 8504 | return event_ptid; |
43ff13b4 JM |
8505 | } |
8506 | ||
74531fed PA |
8507 | /* Wait until the remote machine stops, then return, storing status in |
8508 | STATUS just as `wait' would. */ | |
8509 | ||
f6ac5f3d | 8510 | ptid_t |
b60cea74 TT |
8511 | remote_target::wait (ptid_t ptid, struct target_waitstatus *status, |
8512 | target_wait_flags options) | |
c8e38a49 | 8513 | { |
2189c312 SM |
8514 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
8515 | ||
baa8575b SM |
8516 | remote_state *rs = get_remote_state (); |
8517 | ||
8518 | /* Start by clearing the flag that asks for our wait method to be called, | |
8d34471f AB |
8519 | we'll mark it again at the end if needed. If the target is not in |
8520 | async mode then the async token should not be marked. */ | |
baa8575b SM |
8521 | if (target_is_async_p ()) |
8522 | clear_async_event_handler (rs->remote_async_inferior_event_token); | |
8d34471f AB |
8523 | else |
8524 | gdb_assert (!async_event_handler_marked | |
8525 | (rs->remote_async_inferior_event_token)); | |
baa8575b | 8526 | |
c8e38a49 PA |
8527 | ptid_t event_ptid; |
8528 | ||
6efcd9a8 | 8529 | if (target_is_non_stop_p ()) |
6b8edb51 | 8530 | event_ptid = wait_ns (ptid, status, options); |
74531fed | 8531 | else |
6b8edb51 | 8532 | event_ptid = wait_as (ptid, status, options); |
c8e38a49 | 8533 | |
d9d41e78 | 8534 | if (target_is_async_p ()) |
c8e38a49 | 8535 | { |
baa8575b SM |
8536 | /* If there are events left in the queue, or unacknowledged |
8537 | notifications, then tell the event loop to call us again. */ | |
8538 | if (!rs->stop_reply_queue.empty () | |
8539 | || rs->notif_state->pending_event[notif_client_stop.id] != nullptr) | |
6b8edb51 | 8540 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
c8e38a49 | 8541 | } |
c8e38a49 PA |
8542 | |
8543 | return event_ptid; | |
8544 | } | |
8545 | ||
74ca34ce | 8546 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 8547 | |
6b8edb51 PA |
8548 | int |
8549 | remote_target::fetch_register_using_p (struct regcache *regcache, | |
8550 | packet_reg *reg) | |
b96ec7ac | 8551 | { |
ac7936df | 8552 | struct gdbarch *gdbarch = regcache->arch (); |
b96ec7ac | 8553 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 8554 | char *buf, *p; |
9890e433 | 8555 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
b96ec7ac AC |
8556 | int i; |
8557 | ||
ff52c073 | 8558 | if (m_features.packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
8559 | return 0; |
8560 | ||
8561 | if (reg->pnum == -1) | |
8562 | return 0; | |
8563 | ||
8d64371b | 8564 | p = rs->buf.data (); |
fcad0fa4 | 8565 | *p++ = 'p'; |
74ca34ce | 8566 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 8567 | *p++ = '\0'; |
1f4437a4 | 8568 | putpkt (rs->buf); |
8d64371b | 8569 | getpkt (&rs->buf, 0); |
3f9a994c | 8570 | |
8d64371b | 8571 | buf = rs->buf.data (); |
2e9f7625 | 8572 | |
ff52c073 | 8573 | switch (m_features.packet_ok (rs->buf, PACKET_p)) |
74ca34ce DJ |
8574 | { |
8575 | case PACKET_OK: | |
8576 | break; | |
8577 | case PACKET_UNKNOWN: | |
8578 | return 0; | |
8579 | case PACKET_ERROR: | |
27a9c0bf | 8580 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
ac7936df | 8581 | gdbarch_register_name (regcache->arch (), |
27a9c0bf MS |
8582 | reg->regnum), |
8583 | buf); | |
74ca34ce | 8584 | } |
3f9a994c JB |
8585 | |
8586 | /* If this register is unfetchable, tell the regcache. */ | |
8587 | if (buf[0] == 'x') | |
8480adf2 | 8588 | { |
73e1c03f | 8589 | regcache->raw_supply (reg->regnum, NULL); |
8480adf2 | 8590 | return 1; |
b96ec7ac | 8591 | } |
b96ec7ac | 8592 | |
3f9a994c JB |
8593 | /* Otherwise, parse and supply the value. */ |
8594 | p = buf; | |
8595 | i = 0; | |
8596 | while (p[0] != 0) | |
8597 | { | |
8598 | if (p[1] == 0) | |
74ca34ce | 8599 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
8600 | |
8601 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
8602 | p += 2; | |
8603 | } | |
73e1c03f | 8604 | regcache->raw_supply (reg->regnum, regp); |
3f9a994c | 8605 | return 1; |
b96ec7ac AC |
8606 | } |
8607 | ||
74ca34ce DJ |
8608 | /* Fetch the registers included in the target's 'g' packet. */ |
8609 | ||
6b8edb51 PA |
8610 | int |
8611 | remote_target::send_g_packet () | |
c906108c | 8612 | { |
d01949b6 | 8613 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 8614 | int buf_len; |
c906108c | 8615 | |
8d64371b | 8616 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "g"); |
b75abf5b | 8617 | putpkt (rs->buf); |
8d64371b | 8618 | getpkt (&rs->buf, 0); |
b75abf5b AK |
8619 | if (packet_check_result (rs->buf) == PACKET_ERROR) |
8620 | error (_("Could not read registers; remote failure reply '%s'"), | |
dda83cd7 | 8621 | rs->buf.data ()); |
c906108c | 8622 | |
29709017 DJ |
8623 | /* We can get out of synch in various cases. If the first character |
8624 | in the buffer is not a hex character, assume that has happened | |
8625 | and try to fetch another packet to read. */ | |
8626 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
8627 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
8628 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
8629 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
8630 | { | |
2189c312 | 8631 | remote_debug_printf ("Bad register packet; fetching a new packet"); |
8d64371b | 8632 | getpkt (&rs->buf, 0); |
29709017 DJ |
8633 | } |
8634 | ||
8d64371b | 8635 | buf_len = strlen (rs->buf.data ()); |
74ca34ce DJ |
8636 | |
8637 | /* Sanity check the received packet. */ | |
8638 | if (buf_len % 2 != 0) | |
8d64371b | 8639 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf.data ()); |
29709017 DJ |
8640 | |
8641 | return buf_len / 2; | |
8642 | } | |
8643 | ||
6b8edb51 PA |
8644 | void |
8645 | remote_target::process_g_packet (struct regcache *regcache) | |
29709017 | 8646 | { |
ac7936df | 8647 | struct gdbarch *gdbarch = regcache->arch (); |
29709017 | 8648 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 8649 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); |
29709017 DJ |
8650 | int i, buf_len; |
8651 | char *p; | |
8652 | char *regs; | |
8653 | ||
8d64371b | 8654 | buf_len = strlen (rs->buf.data ()); |
29709017 DJ |
8655 | |
8656 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce | 8657 | if (buf_len > 2 * rsa->sizeof_g_packet) |
fc809827 | 8658 | error (_("Remote 'g' packet reply is too long (expected %ld bytes, got %d " |
8d64371b TT |
8659 | "bytes): %s"), |
8660 | rsa->sizeof_g_packet, buf_len / 2, | |
8661 | rs->buf.data ()); | |
74ca34ce DJ |
8662 | |
8663 | /* Save the size of the packet sent to us by the target. It is used | |
8664 | as a heuristic when determining the max size of packets that the | |
8665 | target can safely receive. */ | |
8666 | if (rsa->actual_register_packet_size == 0) | |
8667 | rsa->actual_register_packet_size = buf_len; | |
8668 | ||
8669 | /* If this is smaller than we guessed the 'g' packet would be, | |
8670 | update our records. A 'g' reply that doesn't include a register's | |
8671 | value implies either that the register is not available, or that | |
8672 | the 'p' packet must be used. */ | |
8673 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 8674 | { |
9dc193c3 | 8675 | long sizeof_g_packet = buf_len / 2; |
74ca34ce | 8676 | |
4a22f64d | 8677 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 8678 | { |
9dc193c3 LF |
8679 | long offset = rsa->regs[i].offset; |
8680 | long reg_size = register_size (gdbarch, i); | |
8681 | ||
74ca34ce DJ |
8682 | if (rsa->regs[i].pnum == -1) |
8683 | continue; | |
8684 | ||
9dc193c3 | 8685 | if (offset >= sizeof_g_packet) |
74ca34ce | 8686 | rsa->regs[i].in_g_packet = 0; |
9dc193c3 LF |
8687 | else if (offset + reg_size > sizeof_g_packet) |
8688 | error (_("Truncated register %d in remote 'g' packet"), i); | |
b96ec7ac | 8689 | else |
74ca34ce | 8690 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 8691 | } |
9dc193c3 LF |
8692 | |
8693 | /* Looks valid enough, we can assume this is the correct length | |
dda83cd7 SM |
8694 | for a 'g' packet. It's important not to adjust |
8695 | rsa->sizeof_g_packet if we have truncated registers otherwise | |
8696 | this "if" won't be run the next time the method is called | |
8697 | with a packet of the same size and one of the internal errors | |
8698 | below will trigger instead. */ | |
9dc193c3 | 8699 | rsa->sizeof_g_packet = sizeof_g_packet; |
74ca34ce | 8700 | } |
b323314b | 8701 | |
224c3ddb | 8702 | regs = (char *) alloca (rsa->sizeof_g_packet); |
c906108c SS |
8703 | |
8704 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 8705 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 8706 | |
c906108c SS |
8707 | /* Reply describes registers byte by byte, each byte encoded as two |
8708 | hex characters. Suck them all up, then supply them to the | |
8709 | register cacheing/storage mechanism. */ | |
8710 | ||
8d64371b | 8711 | p = rs->buf.data (); |
ea9c271d | 8712 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 8713 | { |
74ca34ce DJ |
8714 | if (p[0] == 0 || p[1] == 0) |
8715 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
f34652de | 8716 | internal_error (_("unexpected end of 'g' packet reply")); |
74ca34ce | 8717 | |
c906108c | 8718 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 8719 | regs[i] = 0; /* 'x' */ |
c906108c SS |
8720 | else |
8721 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
8722 | p += 2; | |
8723 | } | |
8724 | ||
a744cf53 MS |
8725 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
8726 | { | |
8727 | struct packet_reg *r = &rsa->regs[i]; | |
9dc193c3 | 8728 | long reg_size = register_size (gdbarch, i); |
a744cf53 MS |
8729 | |
8730 | if (r->in_g_packet) | |
8731 | { | |
8d64371b | 8732 | if ((r->offset + reg_size) * 2 > strlen (rs->buf.data ())) |
a744cf53 | 8733 | /* This shouldn't happen - we adjusted in_g_packet above. */ |
f34652de | 8734 | internal_error (_("unexpected end of 'g' packet reply")); |
a744cf53 MS |
8735 | else if (rs->buf[r->offset * 2] == 'x') |
8736 | { | |
8d64371b | 8737 | gdb_assert (r->offset * 2 < strlen (rs->buf.data ())); |
a744cf53 MS |
8738 | /* The register isn't available, mark it as such (at |
8739 | the same time setting the value to zero). */ | |
73e1c03f | 8740 | regcache->raw_supply (r->regnum, NULL); |
a744cf53 MS |
8741 | } |
8742 | else | |
73e1c03f | 8743 | regcache->raw_supply (r->regnum, regs + r->offset); |
a744cf53 MS |
8744 | } |
8745 | } | |
c906108c SS |
8746 | } |
8747 | ||
6b8edb51 PA |
8748 | void |
8749 | remote_target::fetch_registers_using_g (struct regcache *regcache) | |
29709017 DJ |
8750 | { |
8751 | send_g_packet (); | |
56be3814 | 8752 | process_g_packet (regcache); |
29709017 DJ |
8753 | } |
8754 | ||
e6e4e701 PA |
8755 | /* Make the remote selected traceframe match GDB's selected |
8756 | traceframe. */ | |
8757 | ||
6b8edb51 PA |
8758 | void |
8759 | remote_target::set_remote_traceframe () | |
e6e4e701 PA |
8760 | { |
8761 | int newnum; | |
262e1174 | 8762 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 8763 | |
262e1174 | 8764 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
8765 | return; |
8766 | ||
8767 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 8768 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
8769 | |
8770 | newnum = target_trace_find (tfind_number, | |
8771 | get_traceframe_number (), 0, 0, NULL); | |
8772 | ||
8773 | /* Should not happen. If it does, all bets are off. */ | |
8774 | if (newnum != get_traceframe_number ()) | |
8775 | warning (_("could not set remote traceframe")); | |
8776 | } | |
8777 | ||
f6ac5f3d PA |
8778 | void |
8779 | remote_target::fetch_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 8780 | { |
ac7936df | 8781 | struct gdbarch *gdbarch = regcache->arch (); |
9d6eea31 PA |
8782 | struct remote_state *rs = get_remote_state (); |
8783 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8784 | int i; |
8785 | ||
e6e4e701 | 8786 | set_remote_traceframe (); |
222312d3 | 8787 | set_general_thread (regcache->ptid ()); |
74ca34ce DJ |
8788 | |
8789 | if (regnum >= 0) | |
8790 | { | |
5cd63fda | 8791 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8792 | |
74ca34ce DJ |
8793 | gdb_assert (reg != NULL); |
8794 | ||
8795 | /* If this register might be in the 'g' packet, try that first - | |
8796 | we are likely to read more than one register. If this is the | |
8797 | first 'g' packet, we might be overly optimistic about its | |
8798 | contents, so fall back to 'p'. */ | |
8799 | if (reg->in_g_packet) | |
8800 | { | |
56be3814 | 8801 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
8802 | if (reg->in_g_packet) |
8803 | return; | |
8804 | } | |
8805 | ||
56be3814 | 8806 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
8807 | return; |
8808 | ||
8809 | /* This register is not available. */ | |
73e1c03f | 8810 | regcache->raw_supply (reg->regnum, NULL); |
74ca34ce DJ |
8811 | |
8812 | return; | |
8813 | } | |
8814 | ||
56be3814 | 8815 | fetch_registers_using_g (regcache); |
74ca34ce | 8816 | |
5cd63fda | 8817 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8818 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8819 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8820 | { |
8821 | /* This register is not available. */ | |
73e1c03f | 8822 | regcache->raw_supply (i, NULL); |
74ca34ce DJ |
8823 | } |
8824 | } | |
8825 | ||
c906108c SS |
8826 | /* Prepare to store registers. Since we may send them all (using a |
8827 | 'G' request), we have to read out the ones we don't want to change | |
8828 | first. */ | |
8829 | ||
f6ac5f3d PA |
8830 | void |
8831 | remote_target::prepare_to_store (struct regcache *regcache) | |
c906108c | 8832 | { |
9d6eea31 PA |
8833 | struct remote_state *rs = get_remote_state (); |
8834 | remote_arch_state *rsa = rs->get_remote_arch_state (regcache->arch ()); | |
cf0e1e0d | 8835 | int i; |
cf0e1e0d | 8836 | |
c906108c | 8837 | /* Make sure the entire registers array is valid. */ |
ff52c073 | 8838 | switch (m_features.packet_support (PACKET_P)) |
5a2468f5 JM |
8839 | { |
8840 | case PACKET_DISABLE: | |
8841 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 8842 | /* Make sure all the necessary registers are cached. */ |
ac7936df | 8843 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
ea9c271d | 8844 | if (rsa->regs[i].in_g_packet) |
0b47d985 | 8845 | regcache->raw_update (rsa->regs[i].regnum); |
5a2468f5 JM |
8846 | break; |
8847 | case PACKET_ENABLE: | |
8848 | break; | |
8849 | } | |
8850 | } | |
8851 | ||
ad10f812 | 8852 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 8853 | packet was not recognized. */ |
5a2468f5 | 8854 | |
6b8edb51 PA |
8855 | int |
8856 | remote_target::store_register_using_P (const struct regcache *regcache, | |
8857 | packet_reg *reg) | |
5a2468f5 | 8858 | { |
ac7936df | 8859 | struct gdbarch *gdbarch = regcache->arch (); |
d01949b6 | 8860 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 8861 | /* Try storing a single register. */ |
8d64371b | 8862 | char *buf = rs->buf.data (); |
9890e433 | 8863 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
5a2468f5 | 8864 | char *p; |
5a2468f5 | 8865 | |
ff52c073 | 8866 | if (m_features.packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
8867 | return 0; |
8868 | ||
8869 | if (reg->pnum == -1) | |
8870 | return 0; | |
8871 | ||
ea9c271d | 8872 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 8873 | p = buf + strlen (buf); |
34a79281 | 8874 | regcache->raw_collect (reg->regnum, regp); |
4a22f64d | 8875 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 | 8876 | putpkt (rs->buf); |
8d64371b | 8877 | getpkt (&rs->buf, 0); |
5a2468f5 | 8878 | |
ff52c073 | 8879 | switch (m_features.packet_ok (rs->buf, PACKET_P)) |
74ca34ce DJ |
8880 | { |
8881 | case PACKET_OK: | |
8882 | return 1; | |
8883 | case PACKET_ERROR: | |
27a9c0bf | 8884 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
8d64371b | 8885 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf.data ()); |
74ca34ce DJ |
8886 | case PACKET_UNKNOWN: |
8887 | return 0; | |
8888 | default: | |
f34652de | 8889 | internal_error (_("Bad result from packet_ok")); |
74ca34ce | 8890 | } |
c906108c SS |
8891 | } |
8892 | ||
23860348 MS |
8893 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
8894 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c | 8895 | |
6b8edb51 PA |
8896 | void |
8897 | remote_target::store_registers_using_G (const struct regcache *regcache) | |
c906108c | 8898 | { |
d01949b6 | 8899 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 8900 | remote_arch_state *rsa = rs->get_remote_arch_state (regcache->arch ()); |
cfd77fa1 | 8901 | gdb_byte *regs; |
c906108c SS |
8902 | char *p; |
8903 | ||
193cb69f AC |
8904 | /* Extract all the registers in the regcache copying them into a |
8905 | local buffer. */ | |
8906 | { | |
b323314b | 8907 | int i; |
a744cf53 | 8908 | |
224c3ddb | 8909 | regs = (gdb_byte *) alloca (rsa->sizeof_g_packet); |
ea9c271d | 8910 | memset (regs, 0, rsa->sizeof_g_packet); |
ac7936df | 8911 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
193cb69f | 8912 | { |
ea9c271d | 8913 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 8914 | |
b323314b | 8915 | if (r->in_g_packet) |
34a79281 | 8916 | regcache->raw_collect (r->regnum, regs + r->offset); |
193cb69f AC |
8917 | } |
8918 | } | |
c906108c SS |
8919 | |
8920 | /* Command describes registers byte by byte, | |
8921 | each byte encoded as two hex characters. */ | |
8d64371b | 8922 | p = rs->buf.data (); |
193cb69f | 8923 | *p++ = 'G'; |
74ca34ce | 8924 | bin2hex (regs, p, rsa->sizeof_g_packet); |
1f4437a4 | 8925 | putpkt (rs->buf); |
8d64371b | 8926 | getpkt (&rs->buf, 0); |
1f4437a4 | 8927 | if (packet_check_result (rs->buf) == PACKET_ERROR) |
27a9c0bf | 8928 | error (_("Could not write registers; remote failure reply '%s'"), |
8d64371b | 8929 | rs->buf.data ()); |
c906108c | 8930 | } |
74ca34ce DJ |
8931 | |
8932 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
8933 | of the register cache buffer. FIXME: ignores errors. */ | |
8934 | ||
f6ac5f3d PA |
8935 | void |
8936 | remote_target::store_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 8937 | { |
5cd63fda | 8938 | struct gdbarch *gdbarch = regcache->arch (); |
9d6eea31 PA |
8939 | struct remote_state *rs = get_remote_state (); |
8940 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8941 | int i; |
8942 | ||
e6e4e701 | 8943 | set_remote_traceframe (); |
222312d3 | 8944 | set_general_thread (regcache->ptid ()); |
74ca34ce DJ |
8945 | |
8946 | if (regnum >= 0) | |
8947 | { | |
5cd63fda | 8948 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8949 | |
74ca34ce DJ |
8950 | gdb_assert (reg != NULL); |
8951 | ||
8952 | /* Always prefer to store registers using the 'P' packet if | |
8953 | possible; we often change only a small number of registers. | |
8954 | Sometimes we change a larger number; we'd need help from a | |
8955 | higher layer to know to use 'G'. */ | |
56be3814 | 8956 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
8957 | return; |
8958 | ||
8959 | /* For now, don't complain if we have no way to write the | |
8960 | register. GDB loses track of unavailable registers too | |
8961 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 8962 | any way to read the register, either... */ |
74ca34ce DJ |
8963 | if (!reg->in_g_packet) |
8964 | return; | |
8965 | ||
56be3814 | 8966 | store_registers_using_G (regcache); |
74ca34ce DJ |
8967 | return; |
8968 | } | |
8969 | ||
56be3814 | 8970 | store_registers_using_G (regcache); |
74ca34ce | 8971 | |
5cd63fda | 8972 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8973 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8974 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8975 | /* See above for why we do not issue an error here. */ |
8976 | continue; | |
8977 | } | |
c906108c SS |
8978 | \f |
8979 | ||
8980 | /* Return the number of hex digits in num. */ | |
8981 | ||
8982 | static int | |
fba45db2 | 8983 | hexnumlen (ULONGEST num) |
c906108c SS |
8984 | { |
8985 | int i; | |
8986 | ||
8987 | for (i = 0; num != 0; i++) | |
8988 | num >>= 4; | |
8989 | ||
325fac50 | 8990 | return std::max (i, 1); |
c906108c SS |
8991 | } |
8992 | ||
2df3850c | 8993 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
8994 | |
8995 | static int | |
fba45db2 | 8996 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 8997 | { |
c906108c | 8998 | int len = hexnumlen (num); |
a744cf53 | 8999 | |
2df3850c JM |
9000 | return hexnumnstr (buf, num, len); |
9001 | } | |
9002 | ||
c906108c | 9003 | |
2df3850c | 9004 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 9005 | |
2df3850c | 9006 | static int |
fba45db2 | 9007 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
9008 | { |
9009 | int i; | |
9010 | ||
9011 | buf[width] = '\0'; | |
9012 | ||
9013 | for (i = width - 1; i >= 0; i--) | |
c906108c | 9014 | { |
c5aa993b | 9015 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
9016 | num >>= 4; |
9017 | } | |
9018 | ||
2df3850c | 9019 | return width; |
c906108c SS |
9020 | } |
9021 | ||
23860348 | 9022 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
9023 | |
9024 | static CORE_ADDR | |
fba45db2 | 9025 | remote_address_masked (CORE_ADDR addr) |
c906108c | 9026 | { |
883b9c6c | 9027 | unsigned int address_size = remote_address_size; |
a744cf53 | 9028 | |
911c95a5 UW |
9029 | /* If "remoteaddresssize" was not set, default to target address size. */ |
9030 | if (!address_size) | |
f5656ead | 9031 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
9032 | |
9033 | if (address_size > 0 | |
9034 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
9035 | { |
9036 | /* Only create a mask when that mask can safely be constructed | |
dda83cd7 | 9037 | in a ULONGEST variable. */ |
c906108c | 9038 | ULONGEST mask = 1; |
a744cf53 | 9039 | |
911c95a5 | 9040 | mask = (mask << address_size) - 1; |
c906108c SS |
9041 | addr &= mask; |
9042 | } | |
9043 | return addr; | |
9044 | } | |
9045 | ||
9046 | /* Determine whether the remote target supports binary downloading. | |
9047 | This is accomplished by sending a no-op memory write of zero length | |
9048 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
9049 | the whole packet, since many stubs strip the eighth bit and |
9050 | subsequently compute a wrong checksum, which causes real havoc with | |
9051 | remote_write_bytes. | |
7a292a7a | 9052 | |
96baa820 | 9053 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 9054 | clean. In cases like this, the user should clear "remote |
23860348 | 9055 | X-packet". */ |
96baa820 | 9056 | |
6b8edb51 PA |
9057 | void |
9058 | remote_target::check_binary_download (CORE_ADDR addr) | |
c906108c | 9059 | { |
d01949b6 | 9060 | struct remote_state *rs = get_remote_state (); |
24b06219 | 9061 | |
ff52c073 | 9062 | switch (m_features.packet_support (PACKET_X)) |
c906108c | 9063 | { |
96baa820 JM |
9064 | case PACKET_DISABLE: |
9065 | break; | |
9066 | case PACKET_ENABLE: | |
9067 | break; | |
9068 | case PACKET_SUPPORT_UNKNOWN: | |
9069 | { | |
96baa820 | 9070 | char *p; |
802188a7 | 9071 | |
8d64371b | 9072 | p = rs->buf.data (); |
96baa820 JM |
9073 | *p++ = 'X'; |
9074 | p += hexnumstr (p, (ULONGEST) addr); | |
9075 | *p++ = ','; | |
9076 | p += hexnumstr (p, (ULONGEST) 0); | |
9077 | *p++ = ':'; | |
9078 | *p = '\0'; | |
802188a7 | 9079 | |
8d64371b TT |
9080 | putpkt_binary (rs->buf.data (), (int) (p - rs->buf.data ())); |
9081 | getpkt (&rs->buf, 0); | |
c906108c | 9082 | |
2e9f7625 | 9083 | if (rs->buf[0] == '\0') |
96baa820 | 9084 | { |
2189c312 | 9085 | remote_debug_printf ("binary downloading NOT supported by target"); |
ff52c073 | 9086 | m_features.m_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
9087 | } |
9088 | else | |
9089 | { | |
2189c312 | 9090 | remote_debug_printf ("binary downloading supported by target"); |
ff52c073 | 9091 | m_features.m_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
9092 | } |
9093 | break; | |
9094 | } | |
c906108c SS |
9095 | } |
9096 | } | |
9097 | ||
124e13d9 SM |
9098 | /* Helper function to resize the payload in order to try to get a good |
9099 | alignment. We try to write an amount of data such that the next write will | |
9100 | start on an address aligned on REMOTE_ALIGN_WRITES. */ | |
9101 | ||
9102 | static int | |
9103 | align_for_efficient_write (int todo, CORE_ADDR memaddr) | |
9104 | { | |
9105 | return ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
9106 | } | |
9107 | ||
c906108c SS |
9108 | /* Write memory data directly to the remote machine. |
9109 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 9110 | HEADER is the starting part of the packet. |
c906108c SS |
9111 | MEMADDR is the address in the remote memory space. |
9112 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
9113 | LEN_UNITS is the number of addressable units to write. |
9114 | UNIT_SIZE is the length in bytes of an addressable unit. | |
a76d924d DJ |
9115 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
9116 | should send data as binary ('X'), or hex-encoded ('M'). | |
9117 | ||
9118 | The function creates packet of the form | |
9119 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
9120 | ||
124e13d9 | 9121 | where encoding of <DATA> is terminated by PACKET_FORMAT. |
a76d924d DJ |
9122 | |
9123 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
9124 | are omitted. | |
9125 | ||
9b409511 | 9126 | Return the transferred status, error or OK (an |
124e13d9 SM |
9127 | 'enum target_xfer_status' value). Save the number of addressable units |
9128 | transferred in *XFERED_LEN_UNITS. Only transfer a single packet. | |
9129 | ||
9130 | On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an | |
9131 | exchange between gdb and the stub could look like (?? in place of the | |
9132 | checksum): | |
9133 | ||
9134 | -> $m1000,4#?? | |
9135 | <- aaaabbbbccccdddd | |
9136 | ||
9137 | -> $M1000,3:eeeeffffeeee#?? | |
9138 | <- OK | |
9139 | ||
9140 | -> $m1000,4#?? | |
9141 | <- eeeeffffeeeedddd */ | |
c906108c | 9142 | |
6b8edb51 PA |
9143 | target_xfer_status |
9144 | remote_target::remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
9145 | const gdb_byte *myaddr, | |
9146 | ULONGEST len_units, | |
9147 | int unit_size, | |
9148 | ULONGEST *xfered_len_units, | |
9149 | char packet_format, int use_length) | |
c906108c | 9150 | { |
6d820c5c | 9151 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 9152 | char *p; |
a76d924d DJ |
9153 | char *plen = NULL; |
9154 | int plenlen = 0; | |
124e13d9 SM |
9155 | int todo_units; |
9156 | int units_written; | |
9157 | int payload_capacity_bytes; | |
9158 | int payload_length_bytes; | |
a76d924d DJ |
9159 | |
9160 | if (packet_format != 'X' && packet_format != 'M') | |
f34652de | 9161 | internal_error (_("remote_write_bytes_aux: bad packet format")); |
c906108c | 9162 | |
124e13d9 | 9163 | if (len_units == 0) |
9b409511 | 9164 | return TARGET_XFER_EOF; |
b2182ed2 | 9165 | |
124e13d9 | 9166 | payload_capacity_bytes = get_memory_write_packet_size (); |
2bc416ba | 9167 | |
6d820c5c DJ |
9168 | /* The packet buffer will be large enough for the payload; |
9169 | get_memory_packet_size ensures this. */ | |
a76d924d | 9170 | rs->buf[0] = '\0'; |
c906108c | 9171 | |
a257b5bb | 9172 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
9173 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
9174 | ||
124e13d9 | 9175 | payload_capacity_bytes -= strlen ("$,:#NN"); |
a76d924d | 9176 | if (!use_length) |
0df8b418 | 9177 | /* The comma won't be used. */ |
124e13d9 SM |
9178 | payload_capacity_bytes += 1; |
9179 | payload_capacity_bytes -= strlen (header); | |
9180 | payload_capacity_bytes -= hexnumlen (memaddr); | |
c906108c | 9181 | |
a76d924d | 9182 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 9183 | |
8d64371b TT |
9184 | strcat (rs->buf.data (), header); |
9185 | p = rs->buf.data () + strlen (header); | |
a76d924d DJ |
9186 | |
9187 | /* Compute a best guess of the number of bytes actually transfered. */ | |
9188 | if (packet_format == 'X') | |
c906108c | 9189 | { |
23860348 | 9190 | /* Best guess at number of bytes that will fit. */ |
325fac50 PA |
9191 | todo_units = std::min (len_units, |
9192 | (ULONGEST) payload_capacity_bytes / unit_size); | |
a76d924d | 9193 | if (use_length) |
124e13d9 | 9194 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 | 9195 | todo_units = std::min (todo_units, payload_capacity_bytes / unit_size); |
a76d924d DJ |
9196 | } |
9197 | else | |
9198 | { | |
124e13d9 | 9199 | /* Number of bytes that will fit. */ |
325fac50 PA |
9200 | todo_units |
9201 | = std::min (len_units, | |
9202 | (ULONGEST) (payload_capacity_bytes / unit_size) / 2); | |
a76d924d | 9203 | if (use_length) |
124e13d9 | 9204 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 PA |
9205 | todo_units = std::min (todo_units, |
9206 | (payload_capacity_bytes / unit_size) / 2); | |
917317f4 | 9207 | } |
a76d924d | 9208 | |
124e13d9 | 9209 | if (todo_units <= 0) |
f34652de | 9210 | internal_error (_("minimum packet size too small to write data")); |
802188a7 | 9211 | |
6765f3e5 DJ |
9212 | /* If we already need another packet, then try to align the end |
9213 | of this packet to a useful boundary. */ | |
124e13d9 SM |
9214 | if (todo_units > 2 * REMOTE_ALIGN_WRITES && todo_units < len_units) |
9215 | todo_units = align_for_efficient_write (todo_units, memaddr); | |
6765f3e5 | 9216 | |
a257b5bb | 9217 | /* Append "<memaddr>". */ |
917317f4 JM |
9218 | memaddr = remote_address_masked (memaddr); |
9219 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 9220 | |
a76d924d DJ |
9221 | if (use_length) |
9222 | { | |
9223 | /* Append ",". */ | |
9224 | *p++ = ','; | |
802188a7 | 9225 | |
124e13d9 | 9226 | /* Append the length and retain its location and size. It may need to be |
dda83cd7 | 9227 | adjusted once the packet body has been created. */ |
a76d924d | 9228 | plen = p; |
124e13d9 | 9229 | plenlen = hexnumstr (p, (ULONGEST) todo_units); |
a76d924d DJ |
9230 | p += plenlen; |
9231 | } | |
a257b5bb AC |
9232 | |
9233 | /* Append ":". */ | |
917317f4 JM |
9234 | *p++ = ':'; |
9235 | *p = '\0'; | |
802188a7 | 9236 | |
a257b5bb | 9237 | /* Append the packet body. */ |
a76d924d | 9238 | if (packet_format == 'X') |
917317f4 | 9239 | { |
917317f4 JM |
9240 | /* Binary mode. Send target system values byte by byte, in |
9241 | increasing byte addresses. Only escape certain critical | |
9242 | characters. */ | |
124e13d9 SM |
9243 | payload_length_bytes = |
9244 | remote_escape_output (myaddr, todo_units, unit_size, (gdb_byte *) p, | |
9245 | &units_written, payload_capacity_bytes); | |
6765f3e5 | 9246 | |
124e13d9 | 9247 | /* If not all TODO units fit, then we'll need another packet. Make |
9b7194bc DJ |
9248 | a second try to keep the end of the packet aligned. Don't do |
9249 | this if the packet is tiny. */ | |
124e13d9 | 9250 | if (units_written < todo_units && units_written > 2 * REMOTE_ALIGN_WRITES) |
6765f3e5 | 9251 | { |
124e13d9 SM |
9252 | int new_todo_units; |
9253 | ||
9254 | new_todo_units = align_for_efficient_write (units_written, memaddr); | |
9255 | ||
9256 | if (new_todo_units != units_written) | |
9257 | payload_length_bytes = | |
9258 | remote_escape_output (myaddr, new_todo_units, unit_size, | |
9259 | (gdb_byte *) p, &units_written, | |
9260 | payload_capacity_bytes); | |
6765f3e5 DJ |
9261 | } |
9262 | ||
124e13d9 SM |
9263 | p += payload_length_bytes; |
9264 | if (use_length && units_written < todo_units) | |
c906108c | 9265 | { |
802188a7 | 9266 | /* Escape chars have filled up the buffer prematurely, |
124e13d9 | 9267 | and we have actually sent fewer units than planned. |
917317f4 JM |
9268 | Fix-up the length field of the packet. Use the same |
9269 | number of characters as before. */ | |
124e13d9 SM |
9270 | plen += hexnumnstr (plen, (ULONGEST) units_written, |
9271 | plenlen); | |
917317f4 | 9272 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ |
c906108c | 9273 | } |
a76d924d DJ |
9274 | } |
9275 | else | |
9276 | { | |
917317f4 JM |
9277 | /* Normal mode: Send target system values byte by byte, in |
9278 | increasing byte addresses. Each byte is encoded as a two hex | |
9279 | value. */ | |
124e13d9 SM |
9280 | p += 2 * bin2hex (myaddr, p, todo_units * unit_size); |
9281 | units_written = todo_units; | |
c906108c | 9282 | } |
802188a7 | 9283 | |
8d64371b TT |
9284 | putpkt_binary (rs->buf.data (), (int) (p - rs->buf.data ())); |
9285 | getpkt (&rs->buf, 0); | |
802188a7 | 9286 | |
2e9f7625 | 9287 | if (rs->buf[0] == 'E') |
00d84524 | 9288 | return TARGET_XFER_E_IO; |
802188a7 | 9289 | |
124e13d9 SM |
9290 | /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to |
9291 | send fewer units than we'd planned. */ | |
9292 | *xfered_len_units = (ULONGEST) units_written; | |
92ffd475 | 9293 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
9294 | } |
9295 | ||
a76d924d DJ |
9296 | /* Write memory data directly to the remote machine. |
9297 | This does not inform the data cache; the data cache uses this. | |
9298 | MEMADDR is the address in the remote memory space. | |
9299 | MYADDR is the address of the buffer in our space. | |
9300 | LEN is the number of bytes. | |
9301 | ||
9b409511 YQ |
9302 | Return the transferred status, error or OK (an |
9303 | 'enum target_xfer_status' value). Save the number of bytes | |
9304 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 9305 | |
6b8edb51 PA |
9306 | target_xfer_status |
9307 | remote_target::remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, | |
9308 | ULONGEST len, int unit_size, | |
9309 | ULONGEST *xfered_len) | |
a76d924d | 9310 | { |
a121b7c1 | 9311 | const char *packet_format = NULL; |
a76d924d DJ |
9312 | |
9313 | /* Check whether the target supports binary download. */ | |
9314 | check_binary_download (memaddr); | |
9315 | ||
ff52c073 | 9316 | switch (m_features.packet_support (PACKET_X)) |
a76d924d DJ |
9317 | { |
9318 | case PACKET_ENABLE: | |
9319 | packet_format = "X"; | |
9320 | break; | |
9321 | case PACKET_DISABLE: | |
9322 | packet_format = "M"; | |
9323 | break; | |
9324 | case PACKET_SUPPORT_UNKNOWN: | |
f34652de | 9325 | internal_error (_("remote_write_bytes: bad internal state")); |
a76d924d | 9326 | default: |
f34652de | 9327 | internal_error (_("bad switch")); |
a76d924d DJ |
9328 | } |
9329 | ||
9330 | return remote_write_bytes_aux (packet_format, | |
124e13d9 | 9331 | memaddr, myaddr, len, unit_size, xfered_len, |
9b409511 | 9332 | packet_format[0], 1); |
a76d924d DJ |
9333 | } |
9334 | ||
9217e74e YQ |
9335 | /* Read memory data directly from the remote machine. |
9336 | This does not use the data cache; the data cache uses this. | |
9337 | MEMADDR is the address in the remote memory space. | |
9338 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
9339 | LEN_UNITS is the number of addressable memory units to read.. |
9340 | UNIT_SIZE is the length in bytes of an addressable unit. | |
9217e74e YQ |
9341 | |
9342 | Return the transferred status, error or OK (an | |
9343 | 'enum target_xfer_status' value). Save the number of bytes | |
124e13d9 SM |
9344 | transferred in *XFERED_LEN_UNITS. |
9345 | ||
9346 | See the comment of remote_write_bytes_aux for an example of | |
9347 | memory read/write exchange between gdb and the stub. */ | |
9217e74e | 9348 | |
6b8edb51 PA |
9349 | target_xfer_status |
9350 | remote_target::remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, | |
9351 | ULONGEST len_units, | |
9352 | int unit_size, ULONGEST *xfered_len_units) | |
9217e74e YQ |
9353 | { |
9354 | struct remote_state *rs = get_remote_state (); | |
124e13d9 | 9355 | int buf_size_bytes; /* Max size of packet output buffer. */ |
9217e74e | 9356 | char *p; |
124e13d9 SM |
9357 | int todo_units; |
9358 | int decoded_bytes; | |
9217e74e | 9359 | |
124e13d9 | 9360 | buf_size_bytes = get_memory_read_packet_size (); |
9217e74e YQ |
9361 | /* The packet buffer will be large enough for the payload; |
9362 | get_memory_packet_size ensures this. */ | |
9363 | ||
124e13d9 | 9364 | /* Number of units that will fit. */ |
325fac50 PA |
9365 | todo_units = std::min (len_units, |
9366 | (ULONGEST) (buf_size_bytes / unit_size) / 2); | |
9217e74e YQ |
9367 | |
9368 | /* Construct "m"<memaddr>","<len>". */ | |
9369 | memaddr = remote_address_masked (memaddr); | |
8d64371b | 9370 | p = rs->buf.data (); |
9217e74e YQ |
9371 | *p++ = 'm'; |
9372 | p += hexnumstr (p, (ULONGEST) memaddr); | |
9373 | *p++ = ','; | |
124e13d9 | 9374 | p += hexnumstr (p, (ULONGEST) todo_units); |
9217e74e YQ |
9375 | *p = '\0'; |
9376 | putpkt (rs->buf); | |
8d64371b | 9377 | getpkt (&rs->buf, 0); |
9217e74e YQ |
9378 | if (rs->buf[0] == 'E' |
9379 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
9380 | && rs->buf[3] == '\0') | |
9381 | return TARGET_XFER_E_IO; | |
9382 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
9383 | characters. */ | |
8d64371b | 9384 | p = rs->buf.data (); |
124e13d9 | 9385 | decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size); |
9217e74e | 9386 | /* Return what we have. Let higher layers handle partial reads. */ |
124e13d9 | 9387 | *xfered_len_units = (ULONGEST) (decoded_bytes / unit_size); |
92ffd475 | 9388 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
9217e74e YQ |
9389 | } |
9390 | ||
b55fbac4 YQ |
9391 | /* Using the set of read-only target sections of remote, read live |
9392 | read-only memory. | |
8acf9577 YQ |
9393 | |
9394 | For interface/parameters/return description see target.h, | |
9395 | to_xfer_partial. */ | |
9396 | ||
6b8edb51 PA |
9397 | target_xfer_status |
9398 | remote_target::remote_xfer_live_readonly_partial (gdb_byte *readbuf, | |
9399 | ULONGEST memaddr, | |
9400 | ULONGEST len, | |
9401 | int unit_size, | |
9402 | ULONGEST *xfered_len) | |
8acf9577 | 9403 | { |
19cf757a | 9404 | const struct target_section *secp; |
8acf9577 | 9405 | |
6b8edb51 | 9406 | secp = target_section_by_addr (this, memaddr); |
8acf9577 | 9407 | if (secp != NULL |
fd361982 | 9408 | && (bfd_section_flags (secp->the_bfd_section) & SEC_READONLY)) |
8acf9577 | 9409 | { |
8acf9577 YQ |
9410 | ULONGEST memend = memaddr + len; |
9411 | ||
19cf757a AB |
9412 | const target_section_table *table = target_get_section_table (this); |
9413 | for (const target_section &p : *table) | |
8acf9577 | 9414 | { |
bb2a6777 | 9415 | if (memaddr >= p.addr) |
8acf9577 | 9416 | { |
bb2a6777 | 9417 | if (memend <= p.endaddr) |
8acf9577 YQ |
9418 | { |
9419 | /* Entire transfer is within this section. */ | |
124e13d9 | 9420 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 9421 | xfered_len); |
8acf9577 | 9422 | } |
bb2a6777 | 9423 | else if (memaddr >= p.endaddr) |
8acf9577 YQ |
9424 | { |
9425 | /* This section ends before the transfer starts. */ | |
9426 | continue; | |
9427 | } | |
9428 | else | |
9429 | { | |
9430 | /* This section overlaps the transfer. Just do half. */ | |
bb2a6777 | 9431 | len = p.endaddr - memaddr; |
124e13d9 | 9432 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 9433 | xfered_len); |
8acf9577 YQ |
9434 | } |
9435 | } | |
9436 | } | |
9437 | } | |
9438 | ||
9439 | return TARGET_XFER_EOF; | |
9440 | } | |
9441 | ||
9217e74e YQ |
9442 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
9443 | first if the requested memory is unavailable in traceframe. | |
9444 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 9445 | |
6b8edb51 PA |
9446 | target_xfer_status |
9447 | remote_target::remote_read_bytes (CORE_ADDR memaddr, | |
9448 | gdb_byte *myaddr, ULONGEST len, int unit_size, | |
9449 | ULONGEST *xfered_len) | |
c906108c | 9450 | { |
6b6aa828 | 9451 | if (len == 0) |
96c4f946 | 9452 | return TARGET_XFER_EOF; |
b2182ed2 | 9453 | |
8acf9577 YQ |
9454 | if (get_traceframe_number () != -1) |
9455 | { | |
a79b1bc6 | 9456 | std::vector<mem_range> available; |
8acf9577 YQ |
9457 | |
9458 | /* If we fail to get the set of available memory, then the | |
9459 | target does not support querying traceframe info, and so we | |
9460 | attempt reading from the traceframe anyway (assuming the | |
9461 | target implements the old QTro packet then). */ | |
9462 | if (traceframe_available_memory (&available, memaddr, len)) | |
9463 | { | |
a79b1bc6 | 9464 | if (available.empty () || available[0].start != memaddr) |
8acf9577 YQ |
9465 | { |
9466 | enum target_xfer_status res; | |
9467 | ||
9468 | /* Don't read into the traceframe's available | |
9469 | memory. */ | |
a79b1bc6 | 9470 | if (!available.empty ()) |
8acf9577 YQ |
9471 | { |
9472 | LONGEST oldlen = len; | |
9473 | ||
a79b1bc6 | 9474 | len = available[0].start - memaddr; |
8acf9577 YQ |
9475 | gdb_assert (len <= oldlen); |
9476 | } | |
9477 | ||
8acf9577 | 9478 | /* This goes through the topmost target again. */ |
6b8edb51 | 9479 | res = remote_xfer_live_readonly_partial (myaddr, memaddr, |
124e13d9 | 9480 | len, unit_size, xfered_len); |
8acf9577 YQ |
9481 | if (res == TARGET_XFER_OK) |
9482 | return TARGET_XFER_OK; | |
9483 | else | |
9484 | { | |
9485 | /* No use trying further, we know some memory starting | |
9486 | at MEMADDR isn't available. */ | |
9487 | *xfered_len = len; | |
92ffd475 PC |
9488 | return (*xfered_len != 0) ? |
9489 | TARGET_XFER_UNAVAILABLE : TARGET_XFER_EOF; | |
8acf9577 YQ |
9490 | } |
9491 | } | |
9492 | ||
9493 | /* Don't try to read more than how much is available, in | |
9494 | case the target implements the deprecated QTro packet to | |
9495 | cater for older GDBs (the target's knowledge of read-only | |
9496 | sections may be outdated by now). */ | |
a79b1bc6 | 9497 | len = available[0].length; |
8acf9577 YQ |
9498 | } |
9499 | } | |
9500 | ||
124e13d9 | 9501 | return remote_read_bytes_1 (memaddr, myaddr, len, unit_size, xfered_len); |
c906108c | 9502 | } |
74531fed | 9503 | |
c906108c | 9504 | \f |
c906108c | 9505 | |
a76d924d DJ |
9506 | /* Sends a packet with content determined by the printf format string |
9507 | FORMAT and the remaining arguments, then gets the reply. Returns | |
9508 | whether the packet was a success, a failure, or unknown. */ | |
9509 | ||
6b8edb51 PA |
9510 | packet_result |
9511 | remote_target::remote_send_printf (const char *format, ...) | |
a76d924d DJ |
9512 | { |
9513 | struct remote_state *rs = get_remote_state (); | |
9514 | int max_size = get_remote_packet_size (); | |
a76d924d | 9515 | va_list ap; |
a744cf53 | 9516 | |
a76d924d DJ |
9517 | va_start (ap, format); |
9518 | ||
9519 | rs->buf[0] = '\0'; | |
8d64371b | 9520 | int size = vsnprintf (rs->buf.data (), max_size, format, ap); |
33b031ce GB |
9521 | |
9522 | va_end (ap); | |
9523 | ||
9524 | if (size >= max_size) | |
f34652de | 9525 | internal_error (_("Too long remote packet.")); |
a76d924d DJ |
9526 | |
9527 | if (putpkt (rs->buf) < 0) | |
9528 | error (_("Communication problem with target.")); | |
9529 | ||
9530 | rs->buf[0] = '\0'; | |
8d64371b | 9531 | getpkt (&rs->buf, 0); |
a76d924d DJ |
9532 | |
9533 | return packet_check_result (rs->buf); | |
9534 | } | |
9535 | ||
a76d924d DJ |
9536 | /* Flash writing can take quite some time. We'll set |
9537 | effectively infinite timeout for flash operations. | |
9538 | In future, we'll need to decide on a better approach. */ | |
9539 | static const int remote_flash_timeout = 1000; | |
9540 | ||
f6ac5f3d PA |
9541 | void |
9542 | remote_target::flash_erase (ULONGEST address, LONGEST length) | |
a76d924d | 9543 | { |
f5656ead | 9544 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d | 9545 | enum packet_result ret; |
2ec845e7 TT |
9546 | scoped_restore restore_timeout |
9547 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
a76d924d DJ |
9548 | |
9549 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 9550 | phex (address, addr_size), |
a76d924d DJ |
9551 | phex (length, 4)); |
9552 | switch (ret) | |
9553 | { | |
9554 | case PACKET_UNKNOWN: | |
9555 | error (_("Remote target does not support flash erase")); | |
9556 | case PACKET_ERROR: | |
9557 | error (_("Error erasing flash with vFlashErase packet")); | |
9558 | default: | |
9559 | break; | |
9560 | } | |
a76d924d DJ |
9561 | } |
9562 | ||
6b8edb51 PA |
9563 | target_xfer_status |
9564 | remote_target::remote_flash_write (ULONGEST address, | |
9565 | ULONGEST length, ULONGEST *xfered_len, | |
9566 | const gdb_byte *data) | |
a76d924d | 9567 | { |
2ec845e7 TT |
9568 | scoped_restore restore_timeout |
9569 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
9570 | return remote_write_bytes_aux ("vFlashWrite:", address, data, length, 1, | |
9571 | xfered_len,'X', 0); | |
a76d924d DJ |
9572 | } |
9573 | ||
f6ac5f3d PA |
9574 | void |
9575 | remote_target::flash_done () | |
a76d924d | 9576 | { |
a76d924d | 9577 | int ret; |
a76d924d | 9578 | |
2ec845e7 TT |
9579 | scoped_restore restore_timeout |
9580 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
9581 | ||
a76d924d | 9582 | ret = remote_send_printf ("vFlashDone"); |
a76d924d DJ |
9583 | |
9584 | switch (ret) | |
9585 | { | |
9586 | case PACKET_UNKNOWN: | |
9587 | error (_("Remote target does not support vFlashDone")); | |
9588 | case PACKET_ERROR: | |
9589 | error (_("Error finishing flash operation")); | |
9590 | default: | |
9591 | break; | |
9592 | } | |
9593 | } | |
9594 | ||
c906108c SS |
9595 | \f |
9596 | /* Stuff for dealing with the packets which are part of this protocol. | |
9597 | See comment at top of file for details. */ | |
9598 | ||
1927e618 PA |
9599 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
9600 | error to higher layers. Called when a serial error is detected. | |
9601 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
9602 | the system error message for errno at function entry and final dot |
9603 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
9604 | |
9605 | static void | |
5b6d1e4f | 9606 | unpush_and_perror (remote_target *target, const char *string) |
1927e618 | 9607 | { |
d6cb50a2 | 9608 | int saved_errno = errno; |
1927e618 | 9609 | |
5b6d1e4f | 9610 | remote_unpush_target (target); |
d6cb50a2 JK |
9611 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
9612 | safe_strerror (saved_errno)); | |
1927e618 PA |
9613 | } |
9614 | ||
048094ac PA |
9615 | /* Read a single character from the remote end. The current quit |
9616 | handler is overridden to avoid quitting in the middle of packet | |
9617 | sequence, as that would break communication with the remote server. | |
9618 | See remote_serial_quit_handler for more detail. */ | |
c906108c | 9619 | |
6b8edb51 PA |
9620 | int |
9621 | remote_target::readchar (int timeout) | |
c906108c SS |
9622 | { |
9623 | int ch; | |
5d93a237 | 9624 | struct remote_state *rs = get_remote_state (); |
048094ac | 9625 | |
2ec845e7 | 9626 | { |
6b8edb51 PA |
9627 | scoped_restore restore_quit_target |
9628 | = make_scoped_restore (&curr_quit_handler_target, this); | |
2ec845e7 | 9629 | scoped_restore restore_quit |
6b8edb51 | 9630 | = make_scoped_restore (&quit_handler, ::remote_serial_quit_handler); |
c906108c | 9631 | |
2ec845e7 | 9632 | rs->got_ctrlc_during_io = 0; |
c906108c | 9633 | |
2ec845e7 | 9634 | ch = serial_readchar (rs->remote_desc, timeout); |
048094ac | 9635 | |
2ec845e7 TT |
9636 | if (rs->got_ctrlc_during_io) |
9637 | set_quit_flag (); | |
9638 | } | |
048094ac | 9639 | |
2acceee2 | 9640 | if (ch >= 0) |
0876f84a | 9641 | return ch; |
2acceee2 JM |
9642 | |
9643 | switch ((enum serial_rc) ch) | |
c906108c SS |
9644 | { |
9645 | case SERIAL_EOF: | |
5b6d1e4f | 9646 | remote_unpush_target (this); |
598d3636 | 9647 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 9648 | /* no return */ |
c906108c | 9649 | case SERIAL_ERROR: |
5b6d1e4f | 9650 | unpush_and_perror (this, _("Remote communication error. " |
c8f6fc92 | 9651 | "Target disconnected")); |
2acceee2 | 9652 | /* no return */ |
c906108c | 9653 | case SERIAL_TIMEOUT: |
2acceee2 | 9654 | break; |
c906108c | 9655 | } |
2acceee2 | 9656 | return ch; |
c906108c SS |
9657 | } |
9658 | ||
c33e31fd | 9659 | /* Wrapper for serial_write that closes the target and throws if |
048094ac PA |
9660 | writing fails. The current quit handler is overridden to avoid |
9661 | quitting in the middle of packet sequence, as that would break | |
9662 | communication with the remote server. See | |
9663 | remote_serial_quit_handler for more detail. */ | |
c33e31fd | 9664 | |
6b8edb51 PA |
9665 | void |
9666 | remote_target::remote_serial_write (const char *str, int len) | |
c33e31fd | 9667 | { |
5d93a237 | 9668 | struct remote_state *rs = get_remote_state (); |
048094ac | 9669 | |
6b8edb51 PA |
9670 | scoped_restore restore_quit_target |
9671 | = make_scoped_restore (&curr_quit_handler_target, this); | |
2ec845e7 | 9672 | scoped_restore restore_quit |
6b8edb51 | 9673 | = make_scoped_restore (&quit_handler, ::remote_serial_quit_handler); |
048094ac PA |
9674 | |
9675 | rs->got_ctrlc_during_io = 0; | |
5d93a237 TT |
9676 | |
9677 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 9678 | { |
5b6d1e4f | 9679 | unpush_and_perror (this, _("Remote communication error. " |
c8f6fc92 | 9680 | "Target disconnected")); |
c33e31fd | 9681 | } |
048094ac PA |
9682 | |
9683 | if (rs->got_ctrlc_during_io) | |
9684 | set_quit_flag (); | |
c33e31fd PA |
9685 | } |
9686 | ||
b3ced9ba PA |
9687 | /* Return a string representing an escaped version of BUF, of len N. |
9688 | E.g. \n is converted to \\n, \t to \\t, etc. */ | |
6e5abd65 | 9689 | |
b3ced9ba | 9690 | static std::string |
6e5abd65 PA |
9691 | escape_buffer (const char *buf, int n) |
9692 | { | |
d7e74731 | 9693 | string_file stb; |
6e5abd65 | 9694 | |
d7e74731 | 9695 | stb.putstrn (buf, n, '\\'); |
5d10a204 | 9696 | return stb.release (); |
6e5abd65 PA |
9697 | } |
9698 | ||
c906108c | 9699 | int |
6b8edb51 | 9700 | remote_target::putpkt (const char *buf) |
c906108c SS |
9701 | { |
9702 | return putpkt_binary (buf, strlen (buf)); | |
9703 | } | |
9704 | ||
6b8edb51 PA |
9705 | /* Wrapper around remote_target::putpkt to avoid exporting |
9706 | remote_target. */ | |
9707 | ||
9708 | int | |
9709 | putpkt (remote_target *remote, const char *buf) | |
9710 | { | |
9711 | return remote->putpkt (buf); | |
9712 | } | |
9713 | ||
c906108c | 9714 | /* Send a packet to the remote machine, with error checking. The data |
23860348 | 9715 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 9716 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
9717 | and for a possible /0 if we are debugging (remote_debug) and want |
9718 | to print the sent packet as a string. */ | |
c906108c | 9719 | |
6b8edb51 PA |
9720 | int |
9721 | remote_target::putpkt_binary (const char *buf, int cnt) | |
c906108c | 9722 | { |
2d717e4f | 9723 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9724 | int i; |
9725 | unsigned char csum = 0; | |
b80406ac TT |
9726 | gdb::def_vector<char> data (cnt + 6); |
9727 | char *buf2 = data.data (); | |
085dd6e6 | 9728 | |
c906108c SS |
9729 | int ch; |
9730 | int tcount = 0; | |
9731 | char *p; | |
9732 | ||
e24a49d8 PA |
9733 | /* Catch cases like trying to read memory or listing threads while |
9734 | we're waiting for a stop reply. The remote server wouldn't be | |
9735 | ready to handle this request, so we'd hang and timeout. We don't | |
9736 | have to worry about this in synchronous mode, because in that | |
9737 | case it's not possible to issue a command while the target is | |
74531fed PA |
9738 | running. This is not a problem in non-stop mode, because in that |
9739 | case, the stub is always ready to process serial input. */ | |
6efcd9a8 PA |
9740 | if (!target_is_non_stop_p () |
9741 | && target_is_async_p () | |
9742 | && rs->waiting_for_stop_reply) | |
9597b22a DE |
9743 | { |
9744 | error (_("Cannot execute this command while the target is running.\n" | |
9745 | "Use the \"interrupt\" command to stop the target\n" | |
9746 | "and then try again.")); | |
9747 | } | |
e24a49d8 | 9748 | |
c906108c SS |
9749 | /* Copy the packet into buffer BUF2, encapsulating it |
9750 | and giving it a checksum. */ | |
9751 | ||
c906108c SS |
9752 | p = buf2; |
9753 | *p++ = '$'; | |
9754 | ||
9755 | for (i = 0; i < cnt; i++) | |
9756 | { | |
9757 | csum += buf[i]; | |
9758 | *p++ = buf[i]; | |
9759 | } | |
9760 | *p++ = '#'; | |
9761 | *p++ = tohex ((csum >> 4) & 0xf); | |
9762 | *p++ = tohex (csum & 0xf); | |
9763 | ||
9764 | /* Send it over and over until we get a positive ack. */ | |
9765 | ||
9766 | while (1) | |
9767 | { | |
c906108c SS |
9768 | if (remote_debug) |
9769 | { | |
9770 | *p = '\0'; | |
b3ced9ba | 9771 | |
6f8976bf | 9772 | int len = (int) (p - buf2); |
6cc8564b LM |
9773 | int max_chars; |
9774 | ||
9775 | if (remote_packet_max_chars < 0) | |
9776 | max_chars = len; | |
9777 | else | |
9778 | max_chars = remote_packet_max_chars; | |
6f8976bf YQ |
9779 | |
9780 | std::string str | |
6cc8564b | 9781 | = escape_buffer (buf2, std::min (len, max_chars)); |
6f8976bf | 9782 | |
6cc8564b | 9783 | if (len > max_chars) |
2189c312 SM |
9784 | remote_debug_printf_nofunc |
9785 | ("Sending packet: %s [%d bytes omitted]", str.c_str (), | |
9786 | len - max_chars); | |
9787 | else | |
9788 | remote_debug_printf_nofunc ("Sending packet: %s", str.c_str ()); | |
c906108c | 9789 | } |
c33e31fd | 9790 | remote_serial_write (buf2, p - buf2); |
c906108c | 9791 | |
a6f3e723 SL |
9792 | /* If this is a no acks version of the remote protocol, send the |
9793 | packet and move on. */ | |
9794 | if (rs->noack_mode) | |
dda83cd7 | 9795 | break; |
a6f3e723 | 9796 | |
74531fed PA |
9797 | /* Read until either a timeout occurs (-2) or '+' is read. |
9798 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
9799 | while (1) |
9800 | { | |
9801 | ch = readchar (remote_timeout); | |
9802 | ||
c906108c SS |
9803 | switch (ch) |
9804 | { | |
9805 | case '+': | |
2189c312 | 9806 | remote_debug_printf_nofunc ("Received Ack"); |
c906108c | 9807 | return 1; |
1216fa2c | 9808 | case '-': |
2189c312 | 9809 | remote_debug_printf_nofunc ("Received Nak"); |
a17d146e | 9810 | /* FALLTHROUGH */ |
c906108c | 9811 | case SERIAL_TIMEOUT: |
c5aa993b | 9812 | tcount++; |
c906108c | 9813 | if (tcount > 3) |
b80406ac | 9814 | return 0; |
23860348 | 9815 | break; /* Retransmit buffer. */ |
c906108c SS |
9816 | case '$': |
9817 | { | |
2189c312 | 9818 | remote_debug_printf ("Packet instead of Ack, ignoring it"); |
d6f7abdf AC |
9819 | /* It's probably an old response sent because an ACK |
9820 | was lost. Gobble up the packet and ack it so it | |
9821 | doesn't get retransmitted when we resend this | |
9822 | packet. */ | |
6d820c5c | 9823 | skip_frame (); |
c33e31fd | 9824 | remote_serial_write ("+", 1); |
23860348 | 9825 | continue; /* Now, go look for +. */ |
c906108c | 9826 | } |
74531fed PA |
9827 | |
9828 | case '%': | |
9829 | { | |
9830 | int val; | |
9831 | ||
9832 | /* If we got a notification, handle it, and go back to looking | |
9833 | for an ack. */ | |
9834 | /* We've found the start of a notification. Now | |
9835 | collect the data. */ | |
8d64371b | 9836 | val = read_frame (&rs->buf); |
74531fed PA |
9837 | if (val >= 0) |
9838 | { | |
2189c312 SM |
9839 | remote_debug_printf_nofunc |
9840 | (" Notification received: %s", | |
9841 | escape_buffer (rs->buf.data (), val).c_str ()); | |
6e5abd65 | 9842 | |
8d64371b | 9843 | handle_notification (rs->notif_state, rs->buf.data ()); |
74531fed PA |
9844 | /* We're in sync now, rewait for the ack. */ |
9845 | tcount = 0; | |
9846 | } | |
9847 | else | |
2189c312 SM |
9848 | remote_debug_printf_nofunc ("Junk: %c%s", ch & 0177, |
9849 | rs->buf.data ()); | |
74531fed PA |
9850 | continue; |
9851 | } | |
9852 | /* fall-through */ | |
c906108c | 9853 | default: |
2189c312 SM |
9854 | remote_debug_printf_nofunc ("Junk: %c%s", ch & 0177, |
9855 | rs->buf.data ()); | |
c906108c SS |
9856 | continue; |
9857 | } | |
23860348 | 9858 | break; /* Here to retransmit. */ |
c906108c SS |
9859 | } |
9860 | ||
9861 | #if 0 | |
9862 | /* This is wrong. If doing a long backtrace, the user should be | |
dda83cd7 SM |
9863 | able to get out next time we call QUIT, without anything as |
9864 | violent as interrupt_query. If we want to provide a way out of | |
9865 | here without getting to the next QUIT, it should be based on | |
9866 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
9867 | if (quit_flag) |
9868 | { | |
9869 | quit_flag = 0; | |
9870 | interrupt_query (); | |
9871 | } | |
9872 | #endif | |
9873 | } | |
a5c0808e | 9874 | |
a6f3e723 | 9875 | return 0; |
c906108c SS |
9876 | } |
9877 | ||
6d820c5c DJ |
9878 | /* Come here after finding the start of a frame when we expected an |
9879 | ack. Do our best to discard the rest of this packet. */ | |
9880 | ||
6b8edb51 PA |
9881 | void |
9882 | remote_target::skip_frame () | |
6d820c5c DJ |
9883 | { |
9884 | int c; | |
9885 | ||
9886 | while (1) | |
9887 | { | |
9888 | c = readchar (remote_timeout); | |
9889 | switch (c) | |
9890 | { | |
9891 | case SERIAL_TIMEOUT: | |
9892 | /* Nothing we can do. */ | |
9893 | return; | |
9894 | case '#': | |
9895 | /* Discard the two bytes of checksum and stop. */ | |
9896 | c = readchar (remote_timeout); | |
9897 | if (c >= 0) | |
9898 | c = readchar (remote_timeout); | |
9899 | ||
9900 | return; | |
9901 | case '*': /* Run length encoding. */ | |
9902 | /* Discard the repeat count. */ | |
9903 | c = readchar (remote_timeout); | |
9904 | if (c < 0) | |
9905 | return; | |
9906 | break; | |
9907 | default: | |
9908 | /* A regular character. */ | |
9909 | break; | |
9910 | } | |
9911 | } | |
9912 | } | |
9913 | ||
c906108c | 9914 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
9915 | into *BUF, verifying the checksum, length, and handling run-length |
9916 | compression. NUL terminate the buffer. If there is not enough room, | |
8d64371b | 9917 | expand *BUF. |
c906108c | 9918 | |
c2d11a7d JM |
9919 | Returns -1 on error, number of characters in buffer (ignoring the |
9920 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 9921 | SERIAL status indications). */ |
c2d11a7d | 9922 | |
6b8edb51 | 9923 | long |
8d64371b | 9924 | remote_target::read_frame (gdb::char_vector *buf_p) |
c906108c SS |
9925 | { |
9926 | unsigned char csum; | |
c2d11a7d | 9927 | long bc; |
c906108c | 9928 | int c; |
8d64371b | 9929 | char *buf = buf_p->data (); |
a6f3e723 | 9930 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9931 | |
9932 | csum = 0; | |
c2d11a7d | 9933 | bc = 0; |
c906108c SS |
9934 | |
9935 | while (1) | |
9936 | { | |
9937 | c = readchar (remote_timeout); | |
c906108c SS |
9938 | switch (c) |
9939 | { | |
9940 | case SERIAL_TIMEOUT: | |
2189c312 | 9941 | remote_debug_printf ("Timeout in mid-packet, retrying"); |
c2d11a7d | 9942 | return -1; |
2189c312 | 9943 | |
c906108c | 9944 | case '$': |
2189c312 | 9945 | remote_debug_printf ("Saw new packet start in middle of old one"); |
23860348 | 9946 | return -1; /* Start a new packet, count retries. */ |
2189c312 | 9947 | |
c906108c SS |
9948 | case '#': |
9949 | { | |
9950 | unsigned char pktcsum; | |
e1b09194 AC |
9951 | int check_0 = 0; |
9952 | int check_1 = 0; | |
c906108c | 9953 | |
c2d11a7d | 9954 | buf[bc] = '\0'; |
c906108c | 9955 | |
e1b09194 AC |
9956 | check_0 = readchar (remote_timeout); |
9957 | if (check_0 >= 0) | |
9958 | check_1 = readchar (remote_timeout); | |
802188a7 | 9959 | |
e1b09194 AC |
9960 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
9961 | { | |
2189c312 | 9962 | remote_debug_printf ("Timeout in checksum, retrying"); |
e1b09194 AC |
9963 | return -1; |
9964 | } | |
9965 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 | 9966 | { |
2189c312 | 9967 | remote_debug_printf ("Communication error in checksum"); |
40e3f985 FN |
9968 | return -1; |
9969 | } | |
c906108c | 9970 | |
a6f3e723 SL |
9971 | /* Don't recompute the checksum; with no ack packets we |
9972 | don't have any way to indicate a packet retransmission | |
9973 | is necessary. */ | |
9974 | if (rs->noack_mode) | |
9975 | return bc; | |
9976 | ||
e1b09194 | 9977 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 9978 | if (csum == pktcsum) |
dda83cd7 | 9979 | return bc; |
c906108c | 9980 | |
2189c312 SM |
9981 | remote_debug_printf |
9982 | ("Bad checksum, sentsum=0x%x, csum=0x%x, buf=%s", | |
9983 | pktcsum, csum, escape_buffer (buf, bc).c_str ()); | |
6e5abd65 | 9984 | |
c2d11a7d | 9985 | /* Number of characters in buffer ignoring trailing |
dda83cd7 | 9986 | NULL. */ |
c2d11a7d | 9987 | return -1; |
c906108c | 9988 | } |
23860348 | 9989 | case '*': /* Run length encoding. */ |
dda83cd7 | 9990 | { |
c2c6d25f | 9991 | int repeat; |
c906108c | 9992 | |
24b21115 | 9993 | csum += c; |
b4501125 AC |
9994 | c = readchar (remote_timeout); |
9995 | csum += c; | |
23860348 | 9996 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 9997 | |
23860348 | 9998 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 9999 | |
6d820c5c | 10000 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 10001 | { |
8d64371b | 10002 | if (bc + repeat - 1 >= buf_p->size () - 1) |
6d820c5c DJ |
10003 | { |
10004 | /* Make some more room in the buffer. */ | |
8d64371b TT |
10005 | buf_p->resize (buf_p->size () + repeat); |
10006 | buf = buf_p->data (); | |
6d820c5c DJ |
10007 | } |
10008 | ||
c2d11a7d JM |
10009 | memset (&buf[bc], buf[bc - 1], repeat); |
10010 | bc += repeat; | |
c2c6d25f JM |
10011 | continue; |
10012 | } | |
10013 | ||
c2d11a7d | 10014 | buf[bc] = '\0'; |
6cb06a8c | 10015 | gdb_printf (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 10016 | return -1; |
c2c6d25f | 10017 | } |
c906108c | 10018 | default: |
8d64371b | 10019 | if (bc >= buf_p->size () - 1) |
c906108c | 10020 | { |
6d820c5c | 10021 | /* Make some more room in the buffer. */ |
8d64371b TT |
10022 | buf_p->resize (buf_p->size () * 2); |
10023 | buf = buf_p->data (); | |
c906108c SS |
10024 | } |
10025 | ||
6d820c5c DJ |
10026 | buf[bc++] = c; |
10027 | csum += c; | |
10028 | continue; | |
c906108c SS |
10029 | } |
10030 | } | |
10031 | } | |
10032 | ||
ed2b7c17 TT |
10033 | /* Set this to the maximum number of seconds to wait instead of waiting forever |
10034 | in target_wait(). If this timer times out, then it generates an error and | |
10035 | the command is aborted. This replaces most of the need for timeouts in the | |
10036 | GDB test suite, and makes it possible to distinguish between a hung target | |
10037 | and one with slow communications. */ | |
10038 | ||
10039 | static int watchdog = 0; | |
10040 | static void | |
10041 | show_watchdog (struct ui_file *file, int from_tty, | |
10042 | struct cmd_list_element *c, const char *value) | |
10043 | { | |
6cb06a8c | 10044 | gdb_printf (file, _("Watchdog timer is %s.\n"), value); |
ed2b7c17 TT |
10045 | } |
10046 | ||
c906108c | 10047 | /* Read a packet from the remote machine, with error checking, and |
8d64371b TT |
10048 | store it in *BUF. Resize *BUF if necessary to hold the result. If |
10049 | FOREVER, wait forever rather than timing out; this is used (in | |
10050 | synchronous mode) to wait for a target that is is executing user | |
10051 | code to stop. */ | |
d9fcf2fb JM |
10052 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
10053 | don't have to change all the calls to getpkt to deal with the | |
10054 | return value, because at the moment I don't know what the right | |
23860348 | 10055 | thing to do it for those. */ |
6b8edb51 | 10056 | |
c906108c | 10057 | void |
8d64371b | 10058 | remote_target::getpkt (gdb::char_vector *buf, int forever) |
d9fcf2fb | 10059 | { |
8d64371b | 10060 | getpkt_sane (buf, forever); |
d9fcf2fb JM |
10061 | } |
10062 | ||
10063 | ||
10064 | /* Read a packet from the remote machine, with error checking, and | |
8d64371b TT |
10065 | store it in *BUF. Resize *BUF if necessary to hold the result. If |
10066 | FOREVER, wait forever rather than timing out; this is used (in | |
10067 | synchronous mode) to wait for a target that is is executing user | |
10068 | code to stop. If FOREVER == 0, this function is allowed to time | |
10069 | out gracefully and return an indication of this to the caller. | |
10070 | Otherwise return the number of bytes read. If EXPECTING_NOTIF, | |
10071 | consider receiving a notification enough reason to return to the | |
10072 | caller. *IS_NOTIF is an output boolean that indicates whether *BUF | |
10073 | holds a notification or not (a regular packet). */ | |
74531fed | 10074 | |
6b8edb51 | 10075 | int |
8d64371b | 10076 | remote_target::getpkt_or_notif_sane_1 (gdb::char_vector *buf, |
6b8edb51 PA |
10077 | int forever, int expecting_notif, |
10078 | int *is_notif) | |
c906108c | 10079 | { |
2d717e4f | 10080 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
10081 | int c; |
10082 | int tries; | |
10083 | int timeout; | |
df4b58fe | 10084 | int val = -1; |
c906108c | 10085 | |
8d64371b | 10086 | strcpy (buf->data (), "timeout"); |
c906108c SS |
10087 | |
10088 | if (forever) | |
74531fed PA |
10089 | timeout = watchdog > 0 ? watchdog : -1; |
10090 | else if (expecting_notif) | |
10091 | timeout = 0; /* There should already be a char in the buffer. If | |
10092 | not, bail out. */ | |
c906108c SS |
10093 | else |
10094 | timeout = remote_timeout; | |
10095 | ||
10096 | #define MAX_TRIES 3 | |
10097 | ||
74531fed PA |
10098 | /* Process any number of notifications, and then return when |
10099 | we get a packet. */ | |
10100 | for (;;) | |
c906108c | 10101 | { |
d9c43928 | 10102 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
10103 | times. */ |
10104 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 10105 | { |
74531fed PA |
10106 | /* This can loop forever if the remote side sends us |
10107 | characters continuously, but if it pauses, we'll get | |
10108 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
10109 | we'll count that as a retry. | |
10110 | ||
10111 | Note that even when forever is set, we will only wait | |
10112 | forever prior to the start of a packet. After that, we | |
10113 | expect characters to arrive at a brisk pace. They should | |
10114 | show up within remote_timeout intervals. */ | |
10115 | do | |
10116 | c = readchar (timeout); | |
10117 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
10118 | |
10119 | if (c == SERIAL_TIMEOUT) | |
10120 | { | |
74531fed PA |
10121 | if (expecting_notif) |
10122 | return -1; /* Don't complain, it's normal to not get | |
10123 | anything in this case. */ | |
10124 | ||
23860348 | 10125 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 10126 | { |
5b6d1e4f | 10127 | remote_unpush_target (this); |
598d3636 JK |
10128 | throw_error (TARGET_CLOSE_ERROR, |
10129 | _("Watchdog timeout has expired. " | |
10130 | "Target detached.")); | |
c906108c | 10131 | } |
2189c312 SM |
10132 | |
10133 | remote_debug_printf ("Timed out."); | |
c906108c | 10134 | } |
74531fed PA |
10135 | else |
10136 | { | |
10137 | /* We've found the start of a packet or notification. | |
10138 | Now collect the data. */ | |
8d64371b | 10139 | val = read_frame (buf); |
74531fed PA |
10140 | if (val >= 0) |
10141 | break; | |
10142 | } | |
10143 | ||
c33e31fd | 10144 | remote_serial_write ("-", 1); |
c906108c | 10145 | } |
c906108c | 10146 | |
74531fed PA |
10147 | if (tries > MAX_TRIES) |
10148 | { | |
10149 | /* We have tried hard enough, and just can't receive the | |
10150 | packet/notification. Give up. */ | |
6cb06a8c | 10151 | gdb_printf (_("Ignoring packet error, continuing...\n")); |
c906108c | 10152 | |
74531fed PA |
10153 | /* Skip the ack char if we're in no-ack mode. */ |
10154 | if (!rs->noack_mode) | |
c33e31fd | 10155 | remote_serial_write ("+", 1); |
74531fed PA |
10156 | return -1; |
10157 | } | |
c906108c | 10158 | |
74531fed PA |
10159 | /* If we got an ordinary packet, return that to our caller. */ |
10160 | if (c == '$') | |
c906108c SS |
10161 | { |
10162 | if (remote_debug) | |
43e526b9 | 10163 | { |
6cc8564b LM |
10164 | int max_chars; |
10165 | ||
10166 | if (remote_packet_max_chars < 0) | |
10167 | max_chars = val; | |
10168 | else | |
10169 | max_chars = remote_packet_max_chars; | |
10170 | ||
6f8976bf | 10171 | std::string str |
8d64371b | 10172 | = escape_buffer (buf->data (), |
6cc8564b | 10173 | std::min (val, max_chars)); |
6f8976bf | 10174 | |
6cc8564b | 10175 | if (val > max_chars) |
2189c312 SM |
10176 | remote_debug_printf_nofunc |
10177 | ("Packet received: %s [%d bytes omitted]", str.c_str (), | |
10178 | val - max_chars); | |
10179 | else | |
10180 | remote_debug_printf_nofunc ("Packet received: %s", | |
10181 | str.c_str ()); | |
43e526b9 | 10182 | } |
a6f3e723 SL |
10183 | |
10184 | /* Skip the ack char if we're in no-ack mode. */ | |
10185 | if (!rs->noack_mode) | |
c33e31fd | 10186 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
10187 | if (is_notif != NULL) |
10188 | *is_notif = 0; | |
0876f84a | 10189 | return val; |
c906108c SS |
10190 | } |
10191 | ||
74531fed PA |
10192 | /* If we got a notification, handle it, and go back to looking |
10193 | for a packet. */ | |
10194 | else | |
10195 | { | |
10196 | gdb_assert (c == '%'); | |
10197 | ||
2189c312 SM |
10198 | remote_debug_printf_nofunc |
10199 | (" Notification received: %s", | |
10200 | escape_buffer (buf->data (), val).c_str ()); | |
6e5abd65 | 10201 | |
fee9eda9 YQ |
10202 | if (is_notif != NULL) |
10203 | *is_notif = 1; | |
c906108c | 10204 | |
8d64371b | 10205 | handle_notification (rs->notif_state, buf->data ()); |
c906108c | 10206 | |
74531fed | 10207 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 10208 | |
74531fed | 10209 | if (expecting_notif) |
fee9eda9 | 10210 | return val; |
74531fed PA |
10211 | } |
10212 | } | |
10213 | } | |
10214 | ||
6b8edb51 | 10215 | int |
8d64371b | 10216 | remote_target::getpkt_sane (gdb::char_vector *buf, int forever) |
74531fed | 10217 | { |
8d64371b | 10218 | return getpkt_or_notif_sane_1 (buf, forever, 0, NULL); |
74531fed PA |
10219 | } |
10220 | ||
6b8edb51 | 10221 | int |
8d64371b | 10222 | remote_target::getpkt_or_notif_sane (gdb::char_vector *buf, int forever, |
6b8edb51 | 10223 | int *is_notif) |
74531fed | 10224 | { |
8d64371b | 10225 | return getpkt_or_notif_sane_1 (buf, forever, 1, is_notif); |
c906108c | 10226 | } |
74531fed | 10227 | |
28561a65 | 10228 | /* Kill any new fork children of inferior INF that haven't been |
cbb8991c DB |
10229 | processed by follow_fork. */ |
10230 | ||
6b8edb51 | 10231 | void |
28561a65 | 10232 | remote_target::kill_new_fork_children (inferior *inf) |
cbb8991c | 10233 | { |
6b8edb51 | 10234 | remote_state *rs = get_remote_state (); |
42938c1a | 10235 | const notif_client *notif = ¬if_client_stop; |
cbb8991c | 10236 | |
28561a65 SM |
10237 | /* Kill the fork child threads of any threads in inferior INF that are stopped |
10238 | at a fork event. */ | |
10239 | for (thread_info *thread : inf->non_exited_threads ()) | |
cbb8991c | 10240 | { |
28561a65 | 10241 | const target_waitstatus *ws = thread_pending_fork_status (thread); |
cbb8991c | 10242 | |
28561a65 SM |
10243 | if (ws == nullptr) |
10244 | continue; | |
cbb8991c | 10245 | |
28561a65 SM |
10246 | int child_pid = ws->child_ptid ().pid (); |
10247 | int res = remote_vkill (child_pid); | |
10248 | ||
10249 | if (res != 0) | |
10250 | error (_("Can't kill fork child process %d"), child_pid); | |
cbb8991c DB |
10251 | } |
10252 | ||
10253 | /* Check for any pending fork events (not reported or processed yet) | |
28561a65 | 10254 | in inferior INF and kill those fork child threads as well. */ |
cbb8991c | 10255 | remote_notif_get_pending_events (notif); |
953edf2b | 10256 | for (auto &event : rs->stop_reply_queue) |
28561a65 SM |
10257 | { |
10258 | if (event->ptid.pid () != inf->pid) | |
10259 | continue; | |
953edf2b | 10260 | |
28561a65 SM |
10261 | if (!is_fork_status (event->ws.kind ())) |
10262 | continue; | |
10263 | ||
10264 | int child_pid = event->ws.child_ptid ().pid (); | |
10265 | int res = remote_vkill (child_pid); | |
10266 | ||
10267 | if (res != 0) | |
10268 | error (_("Can't kill fork child process %d"), child_pid); | |
10269 | } | |
cbb8991c DB |
10270 | } |
10271 | ||
c906108c | 10272 | \f |
8020350c DB |
10273 | /* Target hook to kill the current inferior. */ |
10274 | ||
f6ac5f3d PA |
10275 | void |
10276 | remote_target::kill () | |
43ff13b4 | 10277 | { |
8020350c | 10278 | int res = -1; |
28561a65 | 10279 | inferior *inf = find_inferior_pid (this, inferior_ptid.pid ()); |
0fdf84ca | 10280 | |
28561a65 SM |
10281 | gdb_assert (inf != nullptr); |
10282 | ||
ff52c073 | 10283 | if (m_features.packet_support (PACKET_vKill) != PACKET_DISABLE) |
0fdf84ca | 10284 | { |
8020350c DB |
10285 | /* If we're stopped while forking and we haven't followed yet, |
10286 | kill the child task. We need to do this before killing the | |
10287 | parent task because if this is a vfork then the parent will | |
10288 | be sleeping. */ | |
28561a65 | 10289 | kill_new_fork_children (inf); |
8020350c | 10290 | |
28561a65 | 10291 | res = remote_vkill (inf->pid); |
8020350c | 10292 | if (res == 0) |
0fdf84ca | 10293 | { |
bc1e6c81 | 10294 | target_mourn_inferior (inferior_ptid); |
0fdf84ca PA |
10295 | return; |
10296 | } | |
8020350c | 10297 | } |
0fdf84ca | 10298 | |
8020350c DB |
10299 | /* If we are in 'target remote' mode and we are killing the only |
10300 | inferior, then we will tell gdbserver to exit and unpush the | |
10301 | target. */ | |
ff52c073 | 10302 | if (res == -1 && !m_features.remote_multi_process_p () |
5b6d1e4f | 10303 | && number_of_live_inferiors (this) == 1) |
8020350c DB |
10304 | { |
10305 | remote_kill_k (); | |
10306 | ||
10307 | /* We've killed the remote end, we get to mourn it. If we are | |
10308 | not in extended mode, mourning the inferior also unpushes | |
10309 | remote_ops from the target stack, which closes the remote | |
10310 | connection. */ | |
bc1e6c81 | 10311 | target_mourn_inferior (inferior_ptid); |
8020350c DB |
10312 | |
10313 | return; | |
0fdf84ca | 10314 | } |
43ff13b4 | 10315 | |
8020350c | 10316 | error (_("Can't kill process")); |
43ff13b4 JM |
10317 | } |
10318 | ||
8020350c DB |
10319 | /* Send a kill request to the target using the 'vKill' packet. */ |
10320 | ||
6b8edb51 PA |
10321 | int |
10322 | remote_target::remote_vkill (int pid) | |
82f73884 | 10323 | { |
ff52c073 | 10324 | if (m_features.packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
10325 | return -1; |
10326 | ||
6b8edb51 PA |
10327 | remote_state *rs = get_remote_state (); |
10328 | ||
82f73884 | 10329 | /* Tell the remote target to detach. */ |
8d64371b | 10330 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "vKill;%x", pid); |
82f73884 | 10331 | putpkt (rs->buf); |
8d64371b | 10332 | getpkt (&rs->buf, 0); |
82f73884 | 10333 | |
ff52c073 | 10334 | switch (m_features.packet_ok (rs->buf, PACKET_vKill)) |
4082afcc PA |
10335 | { |
10336 | case PACKET_OK: | |
10337 | return 0; | |
10338 | case PACKET_ERROR: | |
10339 | return 1; | |
10340 | case PACKET_UNKNOWN: | |
10341 | return -1; | |
10342 | default: | |
f34652de | 10343 | internal_error (_("Bad result from packet_ok")); |
4082afcc | 10344 | } |
82f73884 PA |
10345 | } |
10346 | ||
8020350c DB |
10347 | /* Send a kill request to the target using the 'k' packet. */ |
10348 | ||
6b8edb51 PA |
10349 | void |
10350 | remote_target::remote_kill_k () | |
82f73884 | 10351 | { |
8020350c DB |
10352 | /* Catch errors so the user can quit from gdb even when we |
10353 | aren't on speaking terms with the remote system. */ | |
a70b8144 | 10354 | try |
82f73884 | 10355 | { |
82f73884 | 10356 | putpkt ("k"); |
82f73884 | 10357 | } |
230d2906 | 10358 | catch (const gdb_exception_error &ex) |
8020350c DB |
10359 | { |
10360 | if (ex.error == TARGET_CLOSE_ERROR) | |
10361 | { | |
10362 | /* If we got an (EOF) error that caused the target | |
10363 | to go away, then we're done, that's what we wanted. | |
10364 | "k" is susceptible to cause a premature EOF, given | |
10365 | that the remote server isn't actually required to | |
10366 | reply to "k", and it can happen that it doesn't | |
10367 | even get to reply ACK to the "k". */ | |
10368 | return; | |
10369 | } | |
82f73884 | 10370 | |
8020350c DB |
10371 | /* Otherwise, something went wrong. We didn't actually kill |
10372 | the target. Just propagate the exception, and let the | |
10373 | user or higher layers decide what to do. */ | |
eedc3f4f | 10374 | throw; |
8020350c | 10375 | } |
82f73884 PA |
10376 | } |
10377 | ||
f6ac5f3d PA |
10378 | void |
10379 | remote_target::mourn_inferior () | |
c906108c | 10380 | { |
8020350c | 10381 | struct remote_state *rs = get_remote_state (); |
ce5ce7ed | 10382 | |
9607784a PA |
10383 | /* We're no longer interested in notification events of an inferior |
10384 | that exited or was killed/detached. */ | |
10385 | discard_pending_stop_replies (current_inferior ()); | |
10386 | ||
8020350c | 10387 | /* In 'target remote' mode with one inferior, we close the connection. */ |
5b6d1e4f | 10388 | if (!rs->extended && number_of_live_inferiors (this) <= 1) |
8020350c | 10389 | { |
5b6d1e4f | 10390 | remote_unpush_target (this); |
8020350c DB |
10391 | return; |
10392 | } | |
c906108c | 10393 | |
e24a49d8 PA |
10394 | /* In case we got here due to an error, but we're going to stay |
10395 | connected. */ | |
10396 | rs->waiting_for_stop_reply = 0; | |
10397 | ||
dc1981d7 PA |
10398 | /* If the current general thread belonged to the process we just |
10399 | detached from or has exited, the remote side current general | |
10400 | thread becomes undefined. Considering a case like this: | |
10401 | ||
10402 | - We just got here due to a detach. | |
10403 | - The process that we're detaching from happens to immediately | |
10404 | report a global breakpoint being hit in non-stop mode, in the | |
10405 | same thread we had selected before. | |
10406 | - GDB attaches to this process again. | |
10407 | - This event happens to be the next event we handle. | |
10408 | ||
10409 | GDB would consider that the current general thread didn't need to | |
10410 | be set on the stub side (with Hg), since for all it knew, | |
10411 | GENERAL_THREAD hadn't changed. | |
10412 | ||
10413 | Notice that although in all-stop mode, the remote server always | |
10414 | sets the current thread to the thread reporting the stop event, | |
10415 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
10416 | not* change the current thread when reporting a breakpoint hit, | |
10417 | due to the decoupling of event reporting and event handling. | |
10418 | ||
10419 | To keep things simple, we always invalidate our notion of the | |
10420 | current thread. */ | |
47f8a51d | 10421 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 10422 | |
8020350c | 10423 | /* Call common code to mark the inferior as not running. */ |
48aa3c27 | 10424 | generic_mourn_inferior (); |
2d717e4f | 10425 | } |
c906108c | 10426 | |
57810aa7 | 10427 | bool |
f6ac5f3d | 10428 | extended_remote_target::supports_disable_randomization () |
03583c20 | 10429 | { |
ff52c073 CS |
10430 | return (m_features.packet_support (PACKET_QDisableRandomization) |
10431 | == PACKET_ENABLE); | |
03583c20 UW |
10432 | } |
10433 | ||
6b8edb51 PA |
10434 | void |
10435 | remote_target::extended_remote_disable_randomization (int val) | |
03583c20 UW |
10436 | { |
10437 | struct remote_state *rs = get_remote_state (); | |
10438 | char *reply; | |
10439 | ||
8d64371b TT |
10440 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
10441 | "QDisableRandomization:%x", val); | |
03583c20 | 10442 | putpkt (rs->buf); |
b6bb3468 | 10443 | reply = remote_get_noisy_reply (); |
03583c20 UW |
10444 | if (*reply == '\0') |
10445 | error (_("Target does not support QDisableRandomization.")); | |
10446 | if (strcmp (reply, "OK") != 0) | |
10447 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
10448 | } | |
10449 | ||
6b8edb51 PA |
10450 | int |
10451 | remote_target::extended_remote_run (const std::string &args) | |
2d717e4f DJ |
10452 | { |
10453 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 10454 | int len; |
94585166 | 10455 | const char *remote_exec_file = get_remote_exec_file (); |
c906108c | 10456 | |
2d717e4f DJ |
10457 | /* If the user has disabled vRun support, or we have detected that |
10458 | support is not available, do not try it. */ | |
ff52c073 | 10459 | if (m_features.packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 10460 | return -1; |
424163ea | 10461 | |
8d64371b TT |
10462 | strcpy (rs->buf.data (), "vRun;"); |
10463 | len = strlen (rs->buf.data ()); | |
c906108c | 10464 | |
2d717e4f DJ |
10465 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
10466 | error (_("Remote file name too long for run packet")); | |
8d64371b | 10467 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf.data () + len, |
9f1b45b0 | 10468 | strlen (remote_exec_file)); |
2d717e4f | 10469 | |
7c5ded6a | 10470 | if (!args.empty ()) |
2d717e4f | 10471 | { |
2d717e4f | 10472 | int i; |
2d717e4f | 10473 | |
773a1edc | 10474 | gdb_argv argv (args.c_str ()); |
2d717e4f DJ |
10475 | for (i = 0; argv[i] != NULL; i++) |
10476 | { | |
10477 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
10478 | error (_("Argument list too long for run packet")); | |
10479 | rs->buf[len++] = ';'; | |
8d64371b | 10480 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf.data () + len, |
9f1b45b0 | 10481 | strlen (argv[i])); |
2d717e4f | 10482 | } |
2d717e4f DJ |
10483 | } |
10484 | ||
10485 | rs->buf[len++] = '\0'; | |
10486 | ||
10487 | putpkt (rs->buf); | |
8d64371b | 10488 | getpkt (&rs->buf, 0); |
2d717e4f | 10489 | |
ff52c073 | 10490 | switch (m_features.packet_ok (rs->buf, PACKET_vRun)) |
2d717e4f | 10491 | { |
4082afcc | 10492 | case PACKET_OK: |
3405876a | 10493 | /* We have a wait response. All is well. */ |
2d717e4f | 10494 | return 0; |
4082afcc PA |
10495 | case PACKET_UNKNOWN: |
10496 | return -1; | |
10497 | case PACKET_ERROR: | |
2d717e4f DJ |
10498 | if (remote_exec_file[0] == '\0') |
10499 | error (_("Running the default executable on the remote target failed; " | |
10500 | "try \"set remote exec-file\"?")); | |
10501 | else | |
10502 | error (_("Running \"%s\" on the remote target failed"), | |
10503 | remote_exec_file); | |
4082afcc | 10504 | default: |
557b4d76 | 10505 | gdb_assert_not_reached ("bad switch"); |
2d717e4f | 10506 | } |
c906108c SS |
10507 | } |
10508 | ||
0a2dde4a SDJ |
10509 | /* Helper function to send set/unset environment packets. ACTION is |
10510 | either "set" or "unset". PACKET is either "QEnvironmentHexEncoded" | |
10511 | or "QEnvironmentUnsetVariable". VALUE is the variable to be | |
10512 | sent. */ | |
10513 | ||
6b8edb51 PA |
10514 | void |
10515 | remote_target::send_environment_packet (const char *action, | |
10516 | const char *packet, | |
10517 | const char *value) | |
0a2dde4a | 10518 | { |
6b8edb51 PA |
10519 | remote_state *rs = get_remote_state (); |
10520 | ||
0a2dde4a SDJ |
10521 | /* Convert the environment variable to an hex string, which |
10522 | is the best format to be transmitted over the wire. */ | |
10523 | std::string encoded_value = bin2hex ((const gdb_byte *) value, | |
10524 | strlen (value)); | |
10525 | ||
8d64371b | 10526 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
0a2dde4a SDJ |
10527 | "%s:%s", packet, encoded_value.c_str ()); |
10528 | ||
10529 | putpkt (rs->buf); | |
8d64371b TT |
10530 | getpkt (&rs->buf, 0); |
10531 | if (strcmp (rs->buf.data (), "OK") != 0) | |
0a2dde4a SDJ |
10532 | warning (_("Unable to %s environment variable '%s' on remote."), |
10533 | action, value); | |
10534 | } | |
10535 | ||
10536 | /* Helper function to handle the QEnvironment* packets. */ | |
10537 | ||
6b8edb51 PA |
10538 | void |
10539 | remote_target::extended_remote_environment_support () | |
0a2dde4a | 10540 | { |
6b8edb51 PA |
10541 | remote_state *rs = get_remote_state (); |
10542 | ||
ff52c073 | 10543 | if (m_features.packet_support (PACKET_QEnvironmentReset) != PACKET_DISABLE) |
0a2dde4a SDJ |
10544 | { |
10545 | putpkt ("QEnvironmentReset"); | |
8d64371b TT |
10546 | getpkt (&rs->buf, 0); |
10547 | if (strcmp (rs->buf.data (), "OK") != 0) | |
0a2dde4a SDJ |
10548 | warning (_("Unable to reset environment on remote.")); |
10549 | } | |
10550 | ||
10551 | gdb_environ *e = ¤t_inferior ()->environment; | |
10552 | ||
ff52c073 CS |
10553 | if (m_features.packet_support (PACKET_QEnvironmentHexEncoded) |
10554 | != PACKET_DISABLE) | |
10555 | { | |
10556 | for (const std::string &el : e->user_set_env ()) | |
10557 | send_environment_packet ("set", "QEnvironmentHexEncoded", | |
10558 | el.c_str ()); | |
10559 | } | |
10560 | ||
0a2dde4a | 10561 | |
ff52c073 | 10562 | if (m_features.packet_support (PACKET_QEnvironmentUnset) != PACKET_DISABLE) |
0a2dde4a | 10563 | for (const std::string &el : e->user_unset_env ()) |
6b8edb51 | 10564 | send_environment_packet ("unset", "QEnvironmentUnset", el.c_str ()); |
0a2dde4a SDJ |
10565 | } |
10566 | ||
bc3b087d SDJ |
10567 | /* Helper function to set the current working directory for the |
10568 | inferior in the remote target. */ | |
10569 | ||
6b8edb51 PA |
10570 | void |
10571 | remote_target::extended_remote_set_inferior_cwd () | |
bc3b087d | 10572 | { |
ff52c073 | 10573 | if (m_features.packet_support (PACKET_QSetWorkingDir) != PACKET_DISABLE) |
bc3b087d | 10574 | { |
11bd012e | 10575 | const std::string &inferior_cwd = current_inferior ()->cwd (); |
6b8edb51 | 10576 | remote_state *rs = get_remote_state (); |
bc3b087d | 10577 | |
11bd012e | 10578 | if (!inferior_cwd.empty ()) |
bc3b087d | 10579 | { |
11bd012e SM |
10580 | std::string hexpath |
10581 | = bin2hex ((const gdb_byte *) inferior_cwd.data (), | |
10582 | inferior_cwd.size ()); | |
bc3b087d | 10583 | |
8d64371b | 10584 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
bc3b087d SDJ |
10585 | "QSetWorkingDir:%s", hexpath.c_str ()); |
10586 | } | |
10587 | else | |
10588 | { | |
10589 | /* An empty inferior_cwd means that the user wants us to | |
10590 | reset the remote server's inferior's cwd. */ | |
8d64371b | 10591 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
bc3b087d SDJ |
10592 | "QSetWorkingDir:"); |
10593 | } | |
10594 | ||
10595 | putpkt (rs->buf); | |
8d64371b | 10596 | getpkt (&rs->buf, 0); |
ff52c073 | 10597 | if (m_features.packet_ok (rs->buf, PACKET_QSetWorkingDir) != PACKET_OK) |
bc3b087d SDJ |
10598 | error (_("\ |
10599 | Remote replied unexpectedly while setting the inferior's working\n\ | |
10600 | directory: %s"), | |
8d64371b | 10601 | rs->buf.data ()); |
bc3b087d SDJ |
10602 | |
10603 | } | |
10604 | } | |
10605 | ||
2d717e4f DJ |
10606 | /* In the extended protocol we want to be able to do things like |
10607 | "run" and have them basically work as expected. So we need | |
10608 | a special create_inferior function. We support changing the | |
10609 | executable file and the command line arguments, but not the | |
10610 | environment. */ | |
10611 | ||
f6ac5f3d PA |
10612 | void |
10613 | extended_remote_target::create_inferior (const char *exec_file, | |
10614 | const std::string &args, | |
10615 | char **env, int from_tty) | |
43ff13b4 | 10616 | { |
3405876a PA |
10617 | int run_worked; |
10618 | char *stop_reply; | |
10619 | struct remote_state *rs = get_remote_state (); | |
94585166 | 10620 | const char *remote_exec_file = get_remote_exec_file (); |
3405876a | 10621 | |
43ff13b4 | 10622 | /* If running asynchronously, register the target file descriptor |
23860348 | 10623 | with the event loop. */ |
75c99385 | 10624 | if (target_can_async_p ()) |
4a570176 | 10625 | target_async (true); |
43ff13b4 | 10626 | |
03583c20 | 10627 | /* Disable address space randomization if requested (and supported). */ |
f6ac5f3d | 10628 | if (supports_disable_randomization ()) |
03583c20 UW |
10629 | extended_remote_disable_randomization (disable_randomization); |
10630 | ||
aefd8b33 SDJ |
10631 | /* If startup-with-shell is on, we inform gdbserver to start the |
10632 | remote inferior using a shell. */ | |
ff52c073 | 10633 | if (m_features.packet_support (PACKET_QStartupWithShell) != PACKET_DISABLE) |
aefd8b33 | 10634 | { |
8d64371b | 10635 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
aefd8b33 SDJ |
10636 | "QStartupWithShell:%d", startup_with_shell ? 1 : 0); |
10637 | putpkt (rs->buf); | |
8d64371b TT |
10638 | getpkt (&rs->buf, 0); |
10639 | if (strcmp (rs->buf.data (), "OK") != 0) | |
aefd8b33 SDJ |
10640 | error (_("\ |
10641 | Remote replied unexpectedly while setting startup-with-shell: %s"), | |
8d64371b | 10642 | rs->buf.data ()); |
aefd8b33 SDJ |
10643 | } |
10644 | ||
6b8edb51 | 10645 | extended_remote_environment_support (); |
0a2dde4a | 10646 | |
6b8edb51 | 10647 | extended_remote_set_inferior_cwd (); |
bc3b087d | 10648 | |
43ff13b4 | 10649 | /* Now restart the remote server. */ |
3405876a PA |
10650 | run_worked = extended_remote_run (args) != -1; |
10651 | if (!run_worked) | |
2d717e4f DJ |
10652 | { |
10653 | /* vRun was not supported. Fail if we need it to do what the | |
10654 | user requested. */ | |
10655 | if (remote_exec_file[0]) | |
10656 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7c5ded6a | 10657 | if (!args.empty ()) |
65e65158 | 10658 | error (_("Remote target does not support \"set args\" or run ARGS")); |
43ff13b4 | 10659 | |
2d717e4f DJ |
10660 | /* Fall back to "R". */ |
10661 | extended_remote_restart (); | |
10662 | } | |
424163ea | 10663 | |
3405876a | 10664 | /* vRun's success return is a stop reply. */ |
8d64371b | 10665 | stop_reply = run_worked ? rs->buf.data () : NULL; |
3405876a | 10666 | add_current_inferior_and_thread (stop_reply); |
c0a2216e | 10667 | |
2d717e4f DJ |
10668 | /* Get updated offsets, if the stub uses qOffsets. */ |
10669 | get_offsets (); | |
2d717e4f | 10670 | } |
c906108c | 10671 | \f |
c5aa993b | 10672 | |
b775012e LM |
10673 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
10674 | the list of conditions (in agent expression bytecode format), if any, the | |
10675 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 10676 | started from BUF and ended at BUF_END. */ |
b775012e LM |
10677 | |
10678 | static int | |
10679 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
10680 | struct bp_target_info *bp_tgt, char *buf, |
10681 | char *buf_end) | |
b775012e | 10682 | { |
3cde5c42 | 10683 | if (bp_tgt->conditions.empty ()) |
b775012e LM |
10684 | return 0; |
10685 | ||
10686 | buf += strlen (buf); | |
bba74b36 | 10687 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
10688 | buf++; |
10689 | ||
83621223 | 10690 | /* Send conditions to the target. */ |
d538e36d | 10691 | for (agent_expr *aexpr : bp_tgt->conditions) |
b775012e | 10692 | { |
6f96f485 | 10693 | xsnprintf (buf, buf_end - buf, "X%x,", (int) aexpr->buf.size ()); |
b775012e | 10694 | buf += strlen (buf); |
6f96f485 | 10695 | for (int i = 0; i < aexpr->buf.size (); ++i) |
b775012e LM |
10696 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
10697 | *buf = '\0'; | |
10698 | } | |
b775012e LM |
10699 | return 0; |
10700 | } | |
10701 | ||
d3ce09f5 SS |
10702 | static void |
10703 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
10704 | struct bp_target_info *bp_tgt, char *buf) | |
10705 | { | |
3cde5c42 | 10706 | if (bp_tgt->tcommands.empty ()) |
d3ce09f5 SS |
10707 | return; |
10708 | ||
10709 | buf += strlen (buf); | |
10710 | ||
10711 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
10712 | buf += strlen (buf); | |
10713 | ||
10714 | /* Concatenate all the agent expressions that are commands into the | |
10715 | cmds parameter. */ | |
df97be55 | 10716 | for (agent_expr *aexpr : bp_tgt->tcommands) |
d3ce09f5 | 10717 | { |
6f96f485 | 10718 | sprintf (buf, "X%x,", (int) aexpr->buf.size ()); |
d3ce09f5 | 10719 | buf += strlen (buf); |
6f96f485 | 10720 | for (int i = 0; i < aexpr->buf.size (); ++i) |
d3ce09f5 SS |
10721 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
10722 | *buf = '\0'; | |
10723 | } | |
d3ce09f5 SS |
10724 | } |
10725 | ||
8181d85f DJ |
10726 | /* Insert a breakpoint. On targets that have software breakpoint |
10727 | support, we ask the remote target to do the work; on targets | |
10728 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c | 10729 | |
f6ac5f3d PA |
10730 | int |
10731 | remote_target::insert_breakpoint (struct gdbarch *gdbarch, | |
10732 | struct bp_target_info *bp_tgt) | |
c906108c | 10733 | { |
d471ea57 AC |
10734 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
10735 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
10736 | fails, and the user has explicitly requested the Z support then | |
23860348 | 10737 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 10738 | |
ff52c073 | 10739 | if (m_features.packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10740 | { |
0d5ed153 | 10741 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10742 | struct remote_state *rs; |
bba74b36 | 10743 | char *p, *endbuf; |
4fff2411 | 10744 | |
28439a30 PA |
10745 | /* Make sure the remote is pointing at the right process, if |
10746 | necessary. */ | |
10747 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10748 | set_general_process (); | |
10749 | ||
4fff2411 | 10750 | rs = get_remote_state (); |
8d64371b TT |
10751 | p = rs->buf.data (); |
10752 | endbuf = p + get_remote_packet_size (); | |
802188a7 | 10753 | |
96baa820 JM |
10754 | *(p++) = 'Z'; |
10755 | *(p++) = '0'; | |
10756 | *(p++) = ','; | |
7c0f6dcc | 10757 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 10758 | p += hexnumstr (p, addr); |
579c6ad9 | 10759 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10760 | |
f6ac5f3d | 10761 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 10762 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10763 | |
f6ac5f3d | 10764 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
10765 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10766 | ||
6d820c5c | 10767 | putpkt (rs->buf); |
8d64371b | 10768 | getpkt (&rs->buf, 0); |
96baa820 | 10769 | |
ff52c073 | 10770 | switch (m_features.packet_ok (rs->buf, PACKET_Z0)) |
96baa820 | 10771 | { |
d471ea57 AC |
10772 | case PACKET_ERROR: |
10773 | return -1; | |
10774 | case PACKET_OK: | |
10775 | return 0; | |
10776 | case PACKET_UNKNOWN: | |
10777 | break; | |
96baa820 JM |
10778 | } |
10779 | } | |
c906108c | 10780 | |
0000e5cc PA |
10781 | /* If this breakpoint has target-side commands but this stub doesn't |
10782 | support Z0 packets, throw error. */ | |
3cde5c42 | 10783 | if (!bp_tgt->tcommands.empty ()) |
0000e5cc PA |
10784 | throw_error (NOT_SUPPORTED_ERROR, _("\ |
10785 | Target doesn't support breakpoints that have target side commands.")); | |
10786 | ||
f6ac5f3d | 10787 | return memory_insert_breakpoint (this, gdbarch, bp_tgt); |
c906108c SS |
10788 | } |
10789 | ||
f6ac5f3d PA |
10790 | int |
10791 | remote_target::remove_breakpoint (struct gdbarch *gdbarch, | |
10792 | struct bp_target_info *bp_tgt, | |
10793 | enum remove_bp_reason reason) | |
c906108c | 10794 | { |
8181d85f | 10795 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 10796 | struct remote_state *rs = get_remote_state (); |
96baa820 | 10797 | |
ff52c073 | 10798 | if (m_features.packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10799 | { |
8d64371b TT |
10800 | char *p = rs->buf.data (); |
10801 | char *endbuf = p + get_remote_packet_size (); | |
802188a7 | 10802 | |
28439a30 PA |
10803 | /* Make sure the remote is pointing at the right process, if |
10804 | necessary. */ | |
10805 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10806 | set_general_process (); | |
10807 | ||
96baa820 JM |
10808 | *(p++) = 'z'; |
10809 | *(p++) = '0'; | |
10810 | *(p++) = ','; | |
10811 | ||
8181d85f DJ |
10812 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
10813 | p += hexnumstr (p, addr); | |
579c6ad9 | 10814 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10815 | |
6d820c5c | 10816 | putpkt (rs->buf); |
8d64371b | 10817 | getpkt (&rs->buf, 0); |
96baa820 | 10818 | |
6d820c5c | 10819 | return (rs->buf[0] == 'E'); |
96baa820 JM |
10820 | } |
10821 | ||
f6ac5f3d | 10822 | return memory_remove_breakpoint (this, gdbarch, bp_tgt, reason); |
c906108c SS |
10823 | } |
10824 | ||
f486487f | 10825 | static enum Z_packet_type |
d471ea57 AC |
10826 | watchpoint_to_Z_packet (int type) |
10827 | { | |
10828 | switch (type) | |
10829 | { | |
10830 | case hw_write: | |
bb858e6a | 10831 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
10832 | break; |
10833 | case hw_read: | |
bb858e6a | 10834 | return Z_PACKET_READ_WP; |
d471ea57 AC |
10835 | break; |
10836 | case hw_access: | |
bb858e6a | 10837 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
10838 | break; |
10839 | default: | |
f34652de | 10840 | internal_error (_("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
10841 | } |
10842 | } | |
10843 | ||
f6ac5f3d PA |
10844 | int |
10845 | remote_target::insert_watchpoint (CORE_ADDR addr, int len, | |
10846 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10847 | { |
d01949b6 | 10848 | struct remote_state *rs = get_remote_state (); |
8d64371b | 10849 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
e514a9d6 | 10850 | char *p; |
d471ea57 | 10851 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 10852 | |
24a601dd TV |
10853 | if (m_features.packet_support ((to_underlying (PACKET_Z0) |
10854 | + to_underlying (packet))) == PACKET_DISABLE) | |
85d721b8 | 10855 | return 1; |
802188a7 | 10856 | |
28439a30 PA |
10857 | /* Make sure the remote is pointing at the right process, if |
10858 | necessary. */ | |
10859 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10860 | set_general_process (); | |
10861 | ||
8d64371b TT |
10862 | xsnprintf (rs->buf.data (), endbuf - rs->buf.data (), "Z%x,", packet); |
10863 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 JM |
10864 | addr = remote_address_masked (addr); |
10865 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10866 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 10867 | |
6d820c5c | 10868 | putpkt (rs->buf); |
8d64371b | 10869 | getpkt (&rs->buf, 0); |
96baa820 | 10870 | |
24a601dd TV |
10871 | switch (m_features.packet_ok (rs->buf, (to_underlying (PACKET_Z0) |
10872 | + to_underlying (packet)))) | |
d471ea57 AC |
10873 | { |
10874 | case PACKET_ERROR: | |
d471ea57 | 10875 | return -1; |
85d721b8 PA |
10876 | case PACKET_UNKNOWN: |
10877 | return 1; | |
d471ea57 AC |
10878 | case PACKET_OK: |
10879 | return 0; | |
10880 | } | |
f34652de | 10881 | internal_error (_("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
10882 | } |
10883 | ||
57810aa7 | 10884 | bool |
f6ac5f3d PA |
10885 | remote_target::watchpoint_addr_within_range (CORE_ADDR addr, |
10886 | CORE_ADDR start, int length) | |
283002cf MR |
10887 | { |
10888 | CORE_ADDR diff = remote_address_masked (addr - start); | |
10889 | ||
10890 | return diff < length; | |
10891 | } | |
10892 | ||
d471ea57 | 10893 | |
f6ac5f3d PA |
10894 | int |
10895 | remote_target::remove_watchpoint (CORE_ADDR addr, int len, | |
10896 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10897 | { |
d01949b6 | 10898 | struct remote_state *rs = get_remote_state (); |
8d64371b | 10899 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
e514a9d6 | 10900 | char *p; |
d471ea57 AC |
10901 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
10902 | ||
24a601dd TV |
10903 | if (m_features.packet_support ((to_underlying (PACKET_Z0) |
10904 | + to_underlying (packet))) == PACKET_DISABLE) | |
5cffb350 | 10905 | return -1; |
802188a7 | 10906 | |
28439a30 PA |
10907 | /* Make sure the remote is pointing at the right process, if |
10908 | necessary. */ | |
10909 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10910 | set_general_process (); | |
10911 | ||
8d64371b TT |
10912 | xsnprintf (rs->buf.data (), endbuf - rs->buf.data (), "z%x,", packet); |
10913 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 JM |
10914 | addr = remote_address_masked (addr); |
10915 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10916 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c | 10917 | putpkt (rs->buf); |
8d64371b | 10918 | getpkt (&rs->buf, 0); |
96baa820 | 10919 | |
24a601dd TV |
10920 | switch (m_features.packet_ok (rs->buf, (to_underlying (PACKET_Z0) |
10921 | + to_underlying (packet)))) | |
d471ea57 AC |
10922 | { |
10923 | case PACKET_ERROR: | |
10924 | case PACKET_UNKNOWN: | |
10925 | return -1; | |
10926 | case PACKET_OK: | |
10927 | return 0; | |
10928 | } | |
f34652de | 10929 | internal_error (_("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
10930 | } |
10931 | ||
3c3bea1c | 10932 | |
60fcc1c3 TT |
10933 | static int remote_hw_watchpoint_limit = -1; |
10934 | static int remote_hw_watchpoint_length_limit = -1; | |
10935 | static int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 10936 | |
f6ac5f3d PA |
10937 | int |
10938 | remote_target::region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
480a3f21 PW |
10939 | { |
10940 | if (remote_hw_watchpoint_length_limit == 0) | |
10941 | return 0; | |
10942 | else if (remote_hw_watchpoint_length_limit < 0) | |
10943 | return 1; | |
10944 | else if (len <= remote_hw_watchpoint_length_limit) | |
10945 | return 1; | |
10946 | else | |
10947 | return 0; | |
10948 | } | |
10949 | ||
f6ac5f3d PA |
10950 | int |
10951 | remote_target::can_use_hw_breakpoint (enum bptype type, int cnt, int ot) | |
96baa820 | 10952 | { |
3c3bea1c GS |
10953 | if (type == bp_hardware_breakpoint) |
10954 | { | |
10955 | if (remote_hw_breakpoint_limit == 0) | |
10956 | return 0; | |
501eef12 AC |
10957 | else if (remote_hw_breakpoint_limit < 0) |
10958 | return 1; | |
3c3bea1c GS |
10959 | else if (cnt <= remote_hw_breakpoint_limit) |
10960 | return 1; | |
10961 | } | |
10962 | else | |
10963 | { | |
10964 | if (remote_hw_watchpoint_limit == 0) | |
10965 | return 0; | |
501eef12 AC |
10966 | else if (remote_hw_watchpoint_limit < 0) |
10967 | return 1; | |
3c3bea1c GS |
10968 | else if (ot) |
10969 | return -1; | |
10970 | else if (cnt <= remote_hw_watchpoint_limit) | |
10971 | return 1; | |
10972 | } | |
10973 | return -1; | |
10974 | } | |
10975 | ||
f7e6eed5 PA |
10976 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
10977 | ||
57810aa7 | 10978 | bool |
f6ac5f3d | 10979 | remote_target::stopped_by_sw_breakpoint () |
f7e6eed5 | 10980 | { |
799a2abe | 10981 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10982 | |
799a2abe | 10983 | return (thread->priv != NULL |
7aabaf9d SM |
10984 | && (get_remote_thread_info (thread)->stop_reason |
10985 | == TARGET_STOPPED_BY_SW_BREAKPOINT)); | |
f7e6eed5 PA |
10986 | } |
10987 | ||
10988 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
10989 | remote. */ | |
10990 | ||
57810aa7 | 10991 | bool |
f6ac5f3d | 10992 | remote_target::supports_stopped_by_sw_breakpoint () |
f7e6eed5 | 10993 | { |
ff52c073 | 10994 | return (m_features.packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); |
f7e6eed5 PA |
10995 | } |
10996 | ||
10997 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
10998 | ||
57810aa7 | 10999 | bool |
f6ac5f3d | 11000 | remote_target::stopped_by_hw_breakpoint () |
f7e6eed5 | 11001 | { |
799a2abe | 11002 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 11003 | |
799a2abe | 11004 | return (thread->priv != NULL |
7aabaf9d SM |
11005 | && (get_remote_thread_info (thread)->stop_reason |
11006 | == TARGET_STOPPED_BY_HW_BREAKPOINT)); | |
f7e6eed5 PA |
11007 | } |
11008 | ||
11009 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
11010 | remote. */ | |
11011 | ||
57810aa7 | 11012 | bool |
f6ac5f3d | 11013 | remote_target::supports_stopped_by_hw_breakpoint () |
f7e6eed5 | 11014 | { |
ff52c073 | 11015 | return (m_features.packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); |
f7e6eed5 PA |
11016 | } |
11017 | ||
57810aa7 | 11018 | bool |
f6ac5f3d | 11019 | remote_target::stopped_by_watchpoint () |
3c3bea1c | 11020 | { |
799a2abe | 11021 | struct thread_info *thread = inferior_thread (); |
ee154bee | 11022 | |
799a2abe | 11023 | return (thread->priv != NULL |
7aabaf9d SM |
11024 | && (get_remote_thread_info (thread)->stop_reason |
11025 | == TARGET_STOPPED_BY_WATCHPOINT)); | |
3c3bea1c GS |
11026 | } |
11027 | ||
57810aa7 | 11028 | bool |
f6ac5f3d | 11029 | remote_target::stopped_data_address (CORE_ADDR *addr_p) |
3c3bea1c | 11030 | { |
799a2abe | 11031 | struct thread_info *thread = inferior_thread (); |
a744cf53 | 11032 | |
799a2abe | 11033 | if (thread->priv != NULL |
7aabaf9d SM |
11034 | && (get_remote_thread_info (thread)->stop_reason |
11035 | == TARGET_STOPPED_BY_WATCHPOINT)) | |
4aa7a7f5 | 11036 | { |
7aabaf9d | 11037 | *addr_p = get_remote_thread_info (thread)->watch_data_address; |
57810aa7 | 11038 | return true; |
4aa7a7f5 JJ |
11039 | } |
11040 | ||
57810aa7 | 11041 | return false; |
3c3bea1c GS |
11042 | } |
11043 | ||
11044 | ||
f6ac5f3d PA |
11045 | int |
11046 | remote_target::insert_hw_breakpoint (struct gdbarch *gdbarch, | |
11047 | struct bp_target_info *bp_tgt) | |
3c3bea1c | 11048 | { |
0d5ed153 | 11049 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 11050 | struct remote_state *rs; |
bba74b36 | 11051 | char *p, *endbuf; |
dd61ec5c | 11052 | char *message; |
3c3bea1c | 11053 | |
ff52c073 | 11054 | if (m_features.packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 11055 | return -1; |
2bc416ba | 11056 | |
28439a30 PA |
11057 | /* Make sure the remote is pointing at the right process, if |
11058 | necessary. */ | |
11059 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
11060 | set_general_process (); | |
11061 | ||
4fff2411 | 11062 | rs = get_remote_state (); |
8d64371b TT |
11063 | p = rs->buf.data (); |
11064 | endbuf = p + get_remote_packet_size (); | |
4fff2411 | 11065 | |
96baa820 JM |
11066 | *(p++) = 'Z'; |
11067 | *(p++) = '1'; | |
11068 | *(p++) = ','; | |
802188a7 | 11069 | |
0d5ed153 | 11070 | addr = remote_address_masked (addr); |
96baa820 | 11071 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 11072 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 11073 | |
f6ac5f3d | 11074 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 11075 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 11076 | |
f6ac5f3d | 11077 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
11078 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
11079 | ||
6d820c5c | 11080 | putpkt (rs->buf); |
8d64371b | 11081 | getpkt (&rs->buf, 0); |
96baa820 | 11082 | |
ff52c073 | 11083 | switch (m_features.packet_ok (rs->buf, PACKET_Z1)) |
d471ea57 AC |
11084 | { |
11085 | case PACKET_ERROR: | |
dd61ec5c | 11086 | if (rs->buf[1] == '.') |
dda83cd7 SM |
11087 | { |
11088 | message = strchr (&rs->buf[2], '.'); | |
11089 | if (message) | |
11090 | error (_("Remote failure reply: %s"), message + 1); | |
11091 | } | |
dd61ec5c | 11092 | return -1; |
d471ea57 AC |
11093 | case PACKET_UNKNOWN: |
11094 | return -1; | |
11095 | case PACKET_OK: | |
11096 | return 0; | |
11097 | } | |
f34652de | 11098 | internal_error (_("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
11099 | } |
11100 | ||
d471ea57 | 11101 | |
f6ac5f3d PA |
11102 | int |
11103 | remote_target::remove_hw_breakpoint (struct gdbarch *gdbarch, | |
11104 | struct bp_target_info *bp_tgt) | |
96baa820 | 11105 | { |
8181d85f | 11106 | CORE_ADDR addr; |
d01949b6 | 11107 | struct remote_state *rs = get_remote_state (); |
8d64371b TT |
11108 | char *p = rs->buf.data (); |
11109 | char *endbuf = p + get_remote_packet_size (); | |
c8189ed1 | 11110 | |
ff52c073 | 11111 | if (m_features.packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 11112 | return -1; |
802188a7 | 11113 | |
28439a30 PA |
11114 | /* Make sure the remote is pointing at the right process, if |
11115 | necessary. */ | |
11116 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
11117 | set_general_process (); | |
11118 | ||
96baa820 JM |
11119 | *(p++) = 'z'; |
11120 | *(p++) = '1'; | |
11121 | *(p++) = ','; | |
802188a7 | 11122 | |
8181d85f | 11123 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 11124 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 11125 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 11126 | |
6d820c5c | 11127 | putpkt (rs->buf); |
8d64371b | 11128 | getpkt (&rs->buf, 0); |
802188a7 | 11129 | |
ff52c073 | 11130 | switch (m_features.packet_ok (rs->buf, PACKET_Z1)) |
d471ea57 AC |
11131 | { |
11132 | case PACKET_ERROR: | |
11133 | case PACKET_UNKNOWN: | |
11134 | return -1; | |
11135 | case PACKET_OK: | |
11136 | return 0; | |
11137 | } | |
f34652de | 11138 | internal_error (_("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 11139 | } |
96baa820 | 11140 | |
4a5e7a5b PA |
11141 | /* Verify memory using the "qCRC:" request. */ |
11142 | ||
f6ac5f3d PA |
11143 | int |
11144 | remote_target::verify_memory (const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
4a5e7a5b PA |
11145 | { |
11146 | struct remote_state *rs = get_remote_state (); | |
11147 | unsigned long host_crc, target_crc; | |
11148 | char *tmp; | |
11149 | ||
936d2992 PA |
11150 | /* It doesn't make sense to use qCRC if the remote target is |
11151 | connected but not running. */ | |
55f6301a | 11152 | if (target_has_execution () |
ff52c073 | 11153 | && m_features.packet_support (PACKET_qCRC) != PACKET_DISABLE) |
936d2992 PA |
11154 | { |
11155 | enum packet_result result; | |
28439a30 | 11156 | |
936d2992 PA |
11157 | /* Make sure the remote is pointing at the right process. */ |
11158 | set_general_process (); | |
4a5e7a5b | 11159 | |
936d2992 | 11160 | /* FIXME: assumes lma can fit into long. */ |
8d64371b | 11161 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qCRC:%lx,%lx", |
936d2992 PA |
11162 | (long) lma, (long) size); |
11163 | putpkt (rs->buf); | |
4a5e7a5b | 11164 | |
936d2992 PA |
11165 | /* Be clever; compute the host_crc before waiting for target |
11166 | reply. */ | |
11167 | host_crc = xcrc32 (data, size, 0xffffffff); | |
11168 | ||
8d64371b | 11169 | getpkt (&rs->buf, 0); |
4a5e7a5b | 11170 | |
ff52c073 | 11171 | result = m_features.packet_ok (rs->buf, PACKET_qCRC); |
936d2992 PA |
11172 | if (result == PACKET_ERROR) |
11173 | return -1; | |
11174 | else if (result == PACKET_OK) | |
11175 | { | |
11176 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
11177 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 11178 | |
936d2992 PA |
11179 | return (host_crc == target_crc); |
11180 | } | |
11181 | } | |
4a5e7a5b | 11182 | |
f6ac5f3d | 11183 | return simple_verify_memory (this, data, lma, size); |
4a5e7a5b PA |
11184 | } |
11185 | ||
c906108c SS |
11186 | /* compare-sections command |
11187 | ||
11188 | With no arguments, compares each loadable section in the exec bfd | |
11189 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 11190 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 11191 | |
c906108c | 11192 | static void |
ac88e2de | 11193 | compare_sections_command (const char *args, int from_tty) |
c906108c SS |
11194 | { |
11195 | asection *s; | |
ce359b09 | 11196 | const char *sectname; |
c906108c SS |
11197 | bfd_size_type size; |
11198 | bfd_vma lma; | |
11199 | int matched = 0; | |
11200 | int mismatched = 0; | |
4a5e7a5b | 11201 | int res; |
95cf3b38 | 11202 | int read_only = 0; |
c906108c | 11203 | |
7e10abd1 | 11204 | if (!current_program_space->exec_bfd ()) |
8a3fe4f8 | 11205 | error (_("command cannot be used without an exec file")); |
c906108c | 11206 | |
95cf3b38 DT |
11207 | if (args != NULL && strcmp (args, "-r") == 0) |
11208 | { | |
11209 | read_only = 1; | |
11210 | args = NULL; | |
11211 | } | |
11212 | ||
7e10abd1 | 11213 | for (s = current_program_space->exec_bfd ()->sections; s; s = s->next) |
c906108c SS |
11214 | { |
11215 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 11216 | continue; /* Skip non-loadable section. */ |
c906108c | 11217 | |
95cf3b38 DT |
11218 | if (read_only && (s->flags & SEC_READONLY) == 0) |
11219 | continue; /* Skip writeable sections */ | |
11220 | ||
fd361982 | 11221 | size = bfd_section_size (s); |
c906108c | 11222 | if (size == 0) |
0df8b418 | 11223 | continue; /* Skip zero-length section. */ |
c906108c | 11224 | |
fd361982 | 11225 | sectname = bfd_section_name (s); |
c906108c | 11226 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 11227 | continue; /* Not the section selected by user. */ |
c906108c | 11228 | |
0df8b418 | 11229 | matched = 1; /* Do this section. */ |
c906108c | 11230 | lma = s->lma; |
c906108c | 11231 | |
b80406ac | 11232 | gdb::byte_vector sectdata (size); |
7e10abd1 TT |
11233 | bfd_get_section_contents (current_program_space->exec_bfd (), s, |
11234 | sectdata.data (), 0, size); | |
c906108c | 11235 | |
b80406ac | 11236 | res = target_verify_memory (sectdata.data (), lma, size); |
4a5e7a5b PA |
11237 | |
11238 | if (res == -1) | |
5af949e3 | 11239 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
11240 | paddress (target_gdbarch (), lma), |
11241 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 11242 | |
6cb06a8c TT |
11243 | gdb_printf ("Section %s, range %s -- %s: ", sectname, |
11244 | paddress (target_gdbarch (), lma), | |
11245 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 11246 | if (res) |
6cb06a8c | 11247 | gdb_printf ("matched.\n"); |
c906108c | 11248 | else |
c5aa993b | 11249 | { |
6cb06a8c | 11250 | gdb_printf ("MIS-MATCHED!\n"); |
c5aa993b JM |
11251 | mismatched++; |
11252 | } | |
c906108c SS |
11253 | } |
11254 | if (mismatched > 0) | |
131287d9 AB |
11255 | warning (_("One or more sections of the target image does " |
11256 | "not match the loaded file")); | |
c906108c | 11257 | if (args && !matched) |
6cb06a8c | 11258 | gdb_printf (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
11259 | } |
11260 | ||
0e7f50da UW |
11261 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
11262 | into remote target. The number of bytes written to the remote | |
11263 | target is returned, or -1 for error. */ | |
11264 | ||
6b8edb51 PA |
11265 | target_xfer_status |
11266 | remote_target::remote_write_qxfer (const char *object_name, | |
11267 | const char *annex, const gdb_byte *writebuf, | |
11268 | ULONGEST offset, LONGEST len, | |
11269 | ULONGEST *xfered_len, | |
ff52c073 | 11270 | const unsigned int which_packet) |
0e7f50da UW |
11271 | { |
11272 | int i, buf_len; | |
11273 | ULONGEST n; | |
0e7f50da UW |
11274 | struct remote_state *rs = get_remote_state (); |
11275 | int max_size = get_memory_write_packet_size (); | |
11276 | ||
ff52c073 | 11277 | if (m_features.packet_support (which_packet) == PACKET_DISABLE) |
2ed4b548 | 11278 | return TARGET_XFER_E_IO; |
0e7f50da UW |
11279 | |
11280 | /* Insert header. */ | |
8d64371b | 11281 | i = snprintf (rs->buf.data (), max_size, |
0e7f50da UW |
11282 | "qXfer:%s:write:%s:%s:", |
11283 | object_name, annex ? annex : "", | |
11284 | phex_nz (offset, sizeof offset)); | |
11285 | max_size -= (i + 1); | |
11286 | ||
11287 | /* Escape as much data as fits into rs->buf. */ | |
11288 | buf_len = remote_escape_output | |
8d64371b | 11289 | (writebuf, len, 1, (gdb_byte *) rs->buf.data () + i, &max_size, max_size); |
0e7f50da | 11290 | |
8d64371b TT |
11291 | if (putpkt_binary (rs->buf.data (), i + buf_len) < 0 |
11292 | || getpkt_sane (&rs->buf, 0) < 0 | |
ff52c073 | 11293 | || m_features.packet_ok (rs->buf, which_packet) != PACKET_OK) |
2ed4b548 | 11294 | return TARGET_XFER_E_IO; |
0e7f50da | 11295 | |
8d64371b | 11296 | unpack_varlen_hex (rs->buf.data (), &n); |
9b409511 YQ |
11297 | |
11298 | *xfered_len = n; | |
92ffd475 | 11299 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
0e7f50da UW |
11300 | } |
11301 | ||
0876f84a DJ |
11302 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
11303 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
11304 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
11305 | The number of bytes read may be less than LEN without indicating an | |
11306 | EOF. PACKET is checked and updated to indicate whether the remote | |
11307 | target supports this object. */ | |
11308 | ||
6b8edb51 PA |
11309 | target_xfer_status |
11310 | remote_target::remote_read_qxfer (const char *object_name, | |
11311 | const char *annex, | |
11312 | gdb_byte *readbuf, ULONGEST offset, | |
11313 | LONGEST len, | |
11314 | ULONGEST *xfered_len, | |
ff52c073 | 11315 | const unsigned int which_packet) |
0876f84a | 11316 | { |
0876f84a | 11317 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
11318 | LONGEST i, n, packet_len; |
11319 | ||
ff52c073 | 11320 | if (m_features.packet_support (which_packet) == PACKET_DISABLE) |
2ed4b548 | 11321 | return TARGET_XFER_E_IO; |
0876f84a DJ |
11322 | |
11323 | /* Check whether we've cached an end-of-object packet that matches | |
11324 | this request. */ | |
8e88304f | 11325 | if (rs->finished_object) |
0876f84a | 11326 | { |
8e88304f TT |
11327 | if (strcmp (object_name, rs->finished_object) == 0 |
11328 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
11329 | && offset == rs->finished_offset) | |
9b409511 YQ |
11330 | return TARGET_XFER_EOF; |
11331 | ||
0876f84a DJ |
11332 | |
11333 | /* Otherwise, we're now reading something different. Discard | |
11334 | the cache. */ | |
8e88304f TT |
11335 | xfree (rs->finished_object); |
11336 | xfree (rs->finished_annex); | |
11337 | rs->finished_object = NULL; | |
11338 | rs->finished_annex = NULL; | |
0876f84a DJ |
11339 | } |
11340 | ||
11341 | /* Request only enough to fit in a single packet. The actual data | |
11342 | may not, since we don't know how much of it will need to be escaped; | |
11343 | the target is free to respond with slightly less data. We subtract | |
11344 | five to account for the response type and the protocol frame. */ | |
768adc05 | 11345 | n = std::min<LONGEST> (get_remote_packet_size () - 5, len); |
8d64371b TT |
11346 | snprintf (rs->buf.data (), get_remote_packet_size () - 4, |
11347 | "qXfer:%s:read:%s:%s,%s", | |
0876f84a DJ |
11348 | object_name, annex ? annex : "", |
11349 | phex_nz (offset, sizeof offset), | |
11350 | phex_nz (n, sizeof n)); | |
11351 | i = putpkt (rs->buf); | |
11352 | if (i < 0) | |
2ed4b548 | 11353 | return TARGET_XFER_E_IO; |
0876f84a DJ |
11354 | |
11355 | rs->buf[0] = '\0'; | |
8d64371b | 11356 | packet_len = getpkt_sane (&rs->buf, 0); |
ff52c073 CS |
11357 | if (packet_len < 0 |
11358 | || m_features.packet_ok (rs->buf, which_packet) != PACKET_OK) | |
2ed4b548 | 11359 | return TARGET_XFER_E_IO; |
0876f84a DJ |
11360 | |
11361 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
8d64371b | 11362 | error (_("Unknown remote qXfer reply: %s"), rs->buf.data ()); |
0876f84a DJ |
11363 | |
11364 | /* 'm' means there is (or at least might be) more data after this | |
11365 | batch. That does not make sense unless there's at least one byte | |
11366 | of data in this reply. */ | |
11367 | if (rs->buf[0] == 'm' && packet_len == 1) | |
11368 | error (_("Remote qXfer reply contained no data.")); | |
11369 | ||
11370 | /* Got some data. */ | |
8d64371b | 11371 | i = remote_unescape_input ((gdb_byte *) rs->buf.data () + 1, |
bc20a4af | 11372 | packet_len - 1, readbuf, n); |
0876f84a DJ |
11373 | |
11374 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
11375 | or possibly empty. If we have the final block of a non-empty |
11376 | object, record this fact to bypass a subsequent partial read. */ | |
11377 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 11378 | { |
8e88304f TT |
11379 | rs->finished_object = xstrdup (object_name); |
11380 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
11381 | rs->finished_offset = offset + i; | |
0876f84a DJ |
11382 | } |
11383 | ||
9b409511 YQ |
11384 | if (i == 0) |
11385 | return TARGET_XFER_EOF; | |
11386 | else | |
11387 | { | |
11388 | *xfered_len = i; | |
11389 | return TARGET_XFER_OK; | |
11390 | } | |
0876f84a DJ |
11391 | } |
11392 | ||
f6ac5f3d PA |
11393 | enum target_xfer_status |
11394 | remote_target::xfer_partial (enum target_object object, | |
11395 | const char *annex, gdb_byte *readbuf, | |
11396 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, | |
11397 | ULONGEST *xfered_len) | |
c906108c | 11398 | { |
82f73884 | 11399 | struct remote_state *rs; |
c906108c | 11400 | int i; |
6d820c5c | 11401 | char *p2; |
1e3ff5ad | 11402 | char query_type; |
124e13d9 | 11403 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
c906108c | 11404 | |
e6e4e701 | 11405 | set_remote_traceframe (); |
82f73884 PA |
11406 | set_general_thread (inferior_ptid); |
11407 | ||
11408 | rs = get_remote_state (); | |
11409 | ||
b2182ed2 | 11410 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
11411 | if (object == TARGET_OBJECT_MEMORY) |
11412 | { | |
2d717e4f DJ |
11413 | /* If the remote target is connected but not running, we should |
11414 | pass this request down to a lower stratum (e.g. the executable | |
11415 | file). */ | |
55f6301a | 11416 | if (!target_has_execution ()) |
9b409511 | 11417 | return TARGET_XFER_EOF; |
2d717e4f | 11418 | |
21e3b9b9 | 11419 | if (writebuf != NULL) |
124e13d9 SM |
11420 | return remote_write_bytes (offset, writebuf, len, unit_size, |
11421 | xfered_len); | |
21e3b9b9 | 11422 | else |
6b8edb51 | 11423 | return remote_read_bytes (offset, readbuf, len, unit_size, |
124e13d9 | 11424 | xfered_len); |
21e3b9b9 DJ |
11425 | } |
11426 | ||
4aa995e1 PA |
11427 | /* Handle extra signal info using qxfer packets. */ |
11428 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
11429 | { | |
11430 | if (readbuf) | |
f6ac5f3d | 11431 | return remote_read_qxfer ("siginfo", annex, readbuf, offset, len, |
ff52c073 | 11432 | xfered_len, PACKET_qXfer_siginfo_read); |
4aa995e1 | 11433 | else |
ff52c073 CS |
11434 | return remote_write_qxfer ("siginfo", annex, writebuf, offset, len, |
11435 | xfered_len, PACKET_qXfer_siginfo_write); | |
4aa995e1 PA |
11436 | } |
11437 | ||
0fb4aa4b PA |
11438 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
11439 | { | |
11440 | if (readbuf) | |
f6ac5f3d | 11441 | return remote_read_qxfer ("statictrace", annex, |
9b409511 | 11442 | readbuf, offset, len, xfered_len, |
ff52c073 | 11443 | PACKET_qXfer_statictrace_read); |
0fb4aa4b | 11444 | else |
2ed4b548 | 11445 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
11446 | } |
11447 | ||
a76d924d DJ |
11448 | /* Only handle flash writes. */ |
11449 | if (writebuf != NULL) | |
11450 | { | |
a76d924d DJ |
11451 | switch (object) |
11452 | { | |
11453 | case TARGET_OBJECT_FLASH: | |
6b8edb51 | 11454 | return remote_flash_write (offset, len, xfered_len, |
9b409511 | 11455 | writebuf); |
a76d924d DJ |
11456 | |
11457 | default: | |
2ed4b548 | 11458 | return TARGET_XFER_E_IO; |
a76d924d DJ |
11459 | } |
11460 | } | |
4b8a223f | 11461 | |
1e3ff5ad AC |
11462 | /* Map pre-existing objects onto letters. DO NOT do this for new |
11463 | objects!!! Instead specify new query packets. */ | |
11464 | switch (object) | |
c906108c | 11465 | { |
1e3ff5ad AC |
11466 | case TARGET_OBJECT_AVR: |
11467 | query_type = 'R'; | |
11468 | break; | |
802188a7 RM |
11469 | |
11470 | case TARGET_OBJECT_AUXV: | |
0876f84a | 11471 | gdb_assert (annex == NULL); |
ff52c073 CS |
11472 | return remote_read_qxfer |
11473 | ("auxv", annex, readbuf, offset, len, xfered_len, PACKET_qXfer_auxv); | |
802188a7 | 11474 | |
23181151 DJ |
11475 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
11476 | return remote_read_qxfer | |
f6ac5f3d | 11477 | ("features", annex, readbuf, offset, len, xfered_len, |
ff52c073 | 11478 | PACKET_qXfer_features); |
23181151 | 11479 | |
cfa9d6d9 DJ |
11480 | case TARGET_OBJECT_LIBRARIES: |
11481 | return remote_read_qxfer | |
f6ac5f3d | 11482 | ("libraries", annex, readbuf, offset, len, xfered_len, |
ff52c073 | 11483 | PACKET_qXfer_libraries); |
cfa9d6d9 | 11484 | |
2268b414 JK |
11485 | case TARGET_OBJECT_LIBRARIES_SVR4: |
11486 | return remote_read_qxfer | |
f6ac5f3d | 11487 | ("libraries-svr4", annex, readbuf, offset, len, xfered_len, |
ff52c073 | 11488 | PACKET_qXfer_libraries_svr4); |
2268b414 | 11489 | |
fd79ecee DJ |
11490 | case TARGET_OBJECT_MEMORY_MAP: |
11491 | gdb_assert (annex == NULL); | |
ff52c073 CS |
11492 | return remote_read_qxfer |
11493 | ("memory-map", annex, readbuf, offset, len, xfered_len, | |
11494 | PACKET_qXfer_memory_map); | |
fd79ecee | 11495 | |
07e059b5 VP |
11496 | case TARGET_OBJECT_OSDATA: |
11497 | /* Should only get here if we're connected. */ | |
5d93a237 | 11498 | gdb_assert (rs->remote_desc); |
07e059b5 | 11499 | return remote_read_qxfer |
f6ac5f3d | 11500 | ("osdata", annex, readbuf, offset, len, xfered_len, |
ff52c073 | 11501 | PACKET_qXfer_osdata); |
07e059b5 | 11502 | |
dc146f7c VP |
11503 | case TARGET_OBJECT_THREADS: |
11504 | gdb_assert (annex == NULL); | |
ff52c073 CS |
11505 | return remote_read_qxfer |
11506 | ("threads", annex, readbuf, offset, len, xfered_len, | |
11507 | PACKET_qXfer_threads); | |
dc146f7c | 11508 | |
b3b9301e PA |
11509 | case TARGET_OBJECT_TRACEFRAME_INFO: |
11510 | gdb_assert (annex == NULL); | |
11511 | return remote_read_qxfer | |
f6ac5f3d | 11512 | ("traceframe-info", annex, readbuf, offset, len, xfered_len, |
ff52c073 | 11513 | PACKET_qXfer_traceframe_info); |
78d85199 YQ |
11514 | |
11515 | case TARGET_OBJECT_FDPIC: | |
ff52c073 CS |
11516 | return remote_read_qxfer |
11517 | ("fdpic", annex, readbuf, offset, len, xfered_len, PACKET_qXfer_fdpic); | |
169081d0 TG |
11518 | |
11519 | case TARGET_OBJECT_OPENVMS_UIB: | |
ff52c073 CS |
11520 | return remote_read_qxfer |
11521 | ("uib", annex, readbuf, offset, len, xfered_len, PACKET_qXfer_uib); | |
169081d0 | 11522 | |
9accd112 | 11523 | case TARGET_OBJECT_BTRACE: |
ff52c073 CS |
11524 | return remote_read_qxfer |
11525 | ("btrace", annex, readbuf, offset, len, xfered_len, | |
11526 | PACKET_qXfer_btrace); | |
9accd112 | 11527 | |
f4abbc16 | 11528 | case TARGET_OBJECT_BTRACE_CONF: |
ff52c073 CS |
11529 | return remote_read_qxfer |
11530 | ("btrace-conf", annex, readbuf, offset, len, xfered_len, | |
11531 | PACKET_qXfer_btrace_conf); | |
f4abbc16 | 11532 | |
c78fa86a | 11533 | case TARGET_OBJECT_EXEC_FILE: |
ff52c073 CS |
11534 | return remote_read_qxfer |
11535 | ("exec-file", annex, readbuf, offset, len, xfered_len, | |
11536 | PACKET_qXfer_exec_file); | |
c78fa86a | 11537 | |
1e3ff5ad | 11538 | default: |
2ed4b548 | 11539 | return TARGET_XFER_E_IO; |
c906108c SS |
11540 | } |
11541 | ||
0df8b418 | 11542 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 11543 | large enough let the caller deal with it. */ |
ea9c271d | 11544 | if (len < get_remote_packet_size ()) |
2ed4b548 | 11545 | return TARGET_XFER_E_IO; |
ea9c271d | 11546 | len = get_remote_packet_size (); |
1e3ff5ad | 11547 | |
23860348 | 11548 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 11549 | if (!rs->remote_desc) |
8a3fe4f8 | 11550 | error (_("remote query is only available after target open")); |
c906108c | 11551 | |
1e3ff5ad | 11552 | gdb_assert (annex != NULL); |
4b8a223f | 11553 | gdb_assert (readbuf != NULL); |
c906108c | 11554 | |
8d64371b | 11555 | p2 = rs->buf.data (); |
c906108c SS |
11556 | *p2++ = 'q'; |
11557 | *p2++ = query_type; | |
11558 | ||
23860348 MS |
11559 | /* We used one buffer char for the remote protocol q command and |
11560 | another for the query type. As the remote protocol encapsulation | |
11561 | uses 4 chars plus one extra in case we are debugging | |
11562 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
11563 | string. */ | |
c906108c | 11564 | i = 0; |
ea9c271d | 11565 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 11566 | { |
1e3ff5ad AC |
11567 | /* Bad caller may have sent forbidden characters. */ |
11568 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
11569 | *p2++ = annex[i]; | |
c906108c SS |
11570 | i++; |
11571 | } | |
1e3ff5ad AC |
11572 | *p2 = '\0'; |
11573 | gdb_assert (annex[i] == '\0'); | |
c906108c | 11574 | |
6d820c5c | 11575 | i = putpkt (rs->buf); |
c5aa993b | 11576 | if (i < 0) |
2ed4b548 | 11577 | return TARGET_XFER_E_IO; |
c906108c | 11578 | |
8d64371b TT |
11579 | getpkt (&rs->buf, 0); |
11580 | strcpy ((char *) readbuf, rs->buf.data ()); | |
c906108c | 11581 | |
9b409511 | 11582 | *xfered_len = strlen ((char *) readbuf); |
92ffd475 | 11583 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
11584 | } |
11585 | ||
09c98b44 DB |
11586 | /* Implementation of to_get_memory_xfer_limit. */ |
11587 | ||
f6ac5f3d PA |
11588 | ULONGEST |
11589 | remote_target::get_memory_xfer_limit () | |
09c98b44 DB |
11590 | { |
11591 | return get_memory_write_packet_size (); | |
11592 | } | |
11593 | ||
f6ac5f3d PA |
11594 | int |
11595 | remote_target::search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
11596 | const gdb_byte *pattern, ULONGEST pattern_len, | |
11597 | CORE_ADDR *found_addrp) | |
08388c79 | 11598 | { |
f5656ead | 11599 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
11600 | struct remote_state *rs = get_remote_state (); |
11601 | int max_size = get_memory_write_packet_size (); | |
ff52c073 | 11602 | |
0df8b418 MS |
11603 | /* Number of packet bytes used to encode the pattern; |
11604 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 11605 | int escaped_pattern_len; |
0df8b418 | 11606 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
11607 | int used_pattern_len; |
11608 | int i; | |
11609 | int found; | |
11610 | ULONGEST found_addr; | |
11611 | ||
5bd5fecd | 11612 | auto read_memory = [this] (CORE_ADDR addr, gdb_byte *result, size_t len) |
4a72de73 TT |
11613 | { |
11614 | return (target_read (this, TARGET_OBJECT_MEMORY, NULL, result, addr, len) | |
11615 | == len); | |
11616 | }; | |
11617 | ||
7cc244de | 11618 | /* Don't go to the target if we don't have to. This is done before |
ff52c073 CS |
11619 | checking packet_support to avoid the possibility that a success for this |
11620 | edge case means the facility works in general. */ | |
08388c79 DE |
11621 | if (pattern_len > search_space_len) |
11622 | return 0; | |
11623 | if (pattern_len == 0) | |
11624 | { | |
11625 | *found_addrp = start_addr; | |
11626 | return 1; | |
11627 | } | |
11628 | ||
11629 | /* If we already know the packet isn't supported, fall back to the simple | |
11630 | way of searching memory. */ | |
11631 | ||
ff52c073 | 11632 | if (m_features.packet_support (PACKET_qSearch_memory) == PACKET_DISABLE) |
08388c79 DE |
11633 | { |
11634 | /* Target doesn't provided special support, fall back and use the | |
11635 | standard support (copy memory and do the search here). */ | |
4a72de73 | 11636 | return simple_search_memory (read_memory, start_addr, search_space_len, |
08388c79 DE |
11637 | pattern, pattern_len, found_addrp); |
11638 | } | |
11639 | ||
28439a30 PA |
11640 | /* Make sure the remote is pointing at the right process. */ |
11641 | set_general_process (); | |
11642 | ||
08388c79 | 11643 | /* Insert header. */ |
8d64371b | 11644 | i = snprintf (rs->buf.data (), max_size, |
08388c79 | 11645 | "qSearch:memory:%s;%s;", |
5af949e3 | 11646 | phex_nz (start_addr, addr_size), |
08388c79 DE |
11647 | phex_nz (search_space_len, sizeof (search_space_len))); |
11648 | max_size -= (i + 1); | |
11649 | ||
11650 | /* Escape as much data as fits into rs->buf. */ | |
11651 | escaped_pattern_len = | |
8d64371b TT |
11652 | remote_escape_output (pattern, pattern_len, 1, |
11653 | (gdb_byte *) rs->buf.data () + i, | |
08388c79 DE |
11654 | &used_pattern_len, max_size); |
11655 | ||
11656 | /* Bail if the pattern is too large. */ | |
11657 | if (used_pattern_len != pattern_len) | |
9b20d036 | 11658 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 | 11659 | |
8d64371b TT |
11660 | if (putpkt_binary (rs->buf.data (), i + escaped_pattern_len) < 0 |
11661 | || getpkt_sane (&rs->buf, 0) < 0 | |
ff52c073 | 11662 | || m_features.packet_ok (rs->buf, PACKET_qSearch_memory) != PACKET_OK) |
08388c79 DE |
11663 | { |
11664 | /* The request may not have worked because the command is not | |
11665 | supported. If so, fall back to the simple way. */ | |
ff52c073 | 11666 | if (m_features.packet_support (PACKET_qSearch_memory) == PACKET_DISABLE) |
08388c79 | 11667 | { |
4a72de73 | 11668 | return simple_search_memory (read_memory, start_addr, search_space_len, |
08388c79 DE |
11669 | pattern, pattern_len, found_addrp); |
11670 | } | |
11671 | return -1; | |
11672 | } | |
11673 | ||
11674 | if (rs->buf[0] == '0') | |
11675 | found = 0; | |
11676 | else if (rs->buf[0] == '1') | |
11677 | { | |
11678 | found = 1; | |
11679 | if (rs->buf[1] != ',') | |
8d64371b TT |
11680 | error (_("Unknown qSearch:memory reply: %s"), rs->buf.data ()); |
11681 | unpack_varlen_hex (&rs->buf[2], &found_addr); | |
08388c79 DE |
11682 | *found_addrp = found_addr; |
11683 | } | |
11684 | else | |
8d64371b | 11685 | error (_("Unknown qSearch:memory reply: %s"), rs->buf.data ()); |
08388c79 DE |
11686 | |
11687 | return found; | |
11688 | } | |
11689 | ||
f6ac5f3d PA |
11690 | void |
11691 | remote_target::rcmd (const char *command, struct ui_file *outbuf) | |
96baa820 | 11692 | { |
d01949b6 | 11693 | struct remote_state *rs = get_remote_state (); |
8d64371b | 11694 | char *p = rs->buf.data (); |
96baa820 | 11695 | |
5d93a237 | 11696 | if (!rs->remote_desc) |
8a3fe4f8 | 11697 | error (_("remote rcmd is only available after target open")); |
96baa820 | 11698 | |
23860348 | 11699 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
11700 | if (command == NULL) |
11701 | command = ""; | |
11702 | ||
23860348 | 11703 | /* The query prefix. */ |
8d64371b TT |
11704 | strcpy (rs->buf.data (), "qRcmd,"); |
11705 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 | 11706 | |
8d64371b | 11707 | if ((strlen (rs->buf.data ()) + strlen (command) * 2 + 8/*misc*/) |
3e43a32a | 11708 | > get_remote_packet_size ()) |
8a3fe4f8 | 11709 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 11710 | |
23860348 | 11711 | /* Encode the actual command. */ |
a30bf1f1 | 11712 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 11713 | |
6d820c5c | 11714 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 11715 | error (_("Communication problem with target.")); |
96baa820 JM |
11716 | |
11717 | /* get/display the response */ | |
11718 | while (1) | |
11719 | { | |
2e9f7625 DJ |
11720 | char *buf; |
11721 | ||
00bf0b85 | 11722 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 11723 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 11724 | rs->buf[0] = '\0'; |
8d64371b | 11725 | if (getpkt_sane (&rs->buf, 0) == -1) |
dda83cd7 SM |
11726 | { |
11727 | /* Timeout. Continue to (try to) read responses. | |
11728 | This is better than stopping with an error, assuming the stub | |
11729 | is still executing the (long) monitor command. | |
11730 | If needed, the user can interrupt gdb using C-c, obtaining | |
11731 | an effect similar to stop on timeout. */ | |
11732 | continue; | |
11733 | } | |
8d64371b | 11734 | buf = rs->buf.data (); |
96baa820 | 11735 | if (buf[0] == '\0') |
8a3fe4f8 | 11736 | error (_("Target does not support this command.")); |
96baa820 JM |
11737 | if (buf[0] == 'O' && buf[1] != 'K') |
11738 | { | |
23860348 | 11739 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
11740 | continue; |
11741 | } | |
11742 | if (strcmp (buf, "OK") == 0) | |
11743 | break; | |
7be570e7 | 11744 | if (strlen (buf) == 3 && buf[0] == 'E' |
d5ce6f2d | 11745 | && isxdigit (buf[1]) && isxdigit (buf[2])) |
7be570e7 | 11746 | { |
8a3fe4f8 | 11747 | error (_("Protocol error with Rcmd")); |
7be570e7 | 11748 | } |
96baa820 JM |
11749 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
11750 | { | |
11751 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 11752 | |
a11ac3b3 | 11753 | gdb_putc (c, outbuf); |
96baa820 JM |
11754 | } |
11755 | break; | |
11756 | } | |
11757 | } | |
11758 | ||
f6ac5f3d PA |
11759 | std::vector<mem_region> |
11760 | remote_target::memory_map () | |
fd79ecee | 11761 | { |
a664f67e | 11762 | std::vector<mem_region> result; |
9018be22 | 11763 | gdb::optional<gdb::char_vector> text |
328d42d8 SM |
11764 | = target_read_stralloc (current_inferior ()->top_target (), |
11765 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
fd79ecee DJ |
11766 | |
11767 | if (text) | |
9018be22 | 11768 | result = parse_memory_map (text->data ()); |
fd79ecee DJ |
11769 | |
11770 | return result; | |
11771 | } | |
11772 | ||
e5b176f2 AB |
11773 | /* Set of callbacks used to implement the 'maint packet' command. */ |
11774 | ||
11775 | struct cli_packet_command_callbacks : public send_remote_packet_callbacks | |
c906108c | 11776 | { |
e5b176f2 AB |
11777 | /* Called before the packet is sent. BUF is the packet content before |
11778 | the protocol specific prefix, suffix, and escaping is added. */ | |
c906108c | 11779 | |
e5b176f2 AB |
11780 | void sending (gdb::array_view<const char> &buf) override |
11781 | { | |
0426ad51 | 11782 | gdb_puts ("sending: "); |
e5b176f2 | 11783 | print_packet (buf); |
0426ad51 | 11784 | gdb_puts ("\n"); |
e5b176f2 | 11785 | } |
c906108c | 11786 | |
e5b176f2 AB |
11787 | /* Called with BUF, the reply from the remote target. */ |
11788 | ||
11789 | void received (gdb::array_view<const char> &buf) override | |
11790 | { | |
0426ad51 | 11791 | gdb_puts ("received: \""); |
e5b176f2 | 11792 | print_packet (buf); |
0426ad51 | 11793 | gdb_puts ("\"\n"); |
e5b176f2 AB |
11794 | } |
11795 | ||
11796 | private: | |
11797 | ||
11798 | /* Print BUF o gdb_stdout. Any non-printable bytes in BUF are printed as | |
11799 | '\x??' with '??' replaced by the hexadecimal value of the byte. */ | |
11800 | ||
11801 | static void | |
11802 | print_packet (gdb::array_view<const char> &buf) | |
11803 | { | |
11804 | string_file stb; | |
11805 | ||
11806 | for (int i = 0; i < buf.size (); ++i) | |
11807 | { | |
11808 | gdb_byte c = buf[i]; | |
11809 | if (isprint (c)) | |
a11ac3b3 | 11810 | gdb_putc (c, &stb); |
e5b176f2 | 11811 | else |
6cb06a8c | 11812 | gdb_printf (&stb, "\\x%02x", (unsigned char) c); |
e5b176f2 AB |
11813 | } |
11814 | ||
0426ad51 | 11815 | gdb_puts (stb.string ().c_str ()); |
e5b176f2 AB |
11816 | } |
11817 | }; | |
11818 | ||
11819 | /* See remote.h. */ | |
6b8edb51 PA |
11820 | |
11821 | void | |
e5b176f2 AB |
11822 | send_remote_packet (gdb::array_view<const char> &buf, |
11823 | send_remote_packet_callbacks *callbacks) | |
6b8edb51 | 11824 | { |
e5b176f2 AB |
11825 | if (buf.size () == 0 || buf.data ()[0] == '\0') |
11826 | error (_("a remote packet must not be empty")); | |
c906108c | 11827 | |
e5b176f2 AB |
11828 | remote_target *remote = get_current_remote_target (); |
11829 | if (remote == nullptr) | |
11830 | error (_("packets can only be sent to a remote target")); | |
c906108c | 11831 | |
e5b176f2 | 11832 | callbacks->sending (buf); |
6b8edb51 | 11833 | |
e5b176f2 AB |
11834 | remote->putpkt_binary (buf.data (), buf.size ()); |
11835 | remote_state *rs = remote->get_remote_state (); | |
11836 | int bytes = remote->getpkt_sane (&rs->buf, 0); | |
11837 | ||
11838 | if (bytes < 0) | |
11839 | error (_("error while fetching packet from remote target")); | |
11840 | ||
11841 | gdb::array_view<const char> view (&rs->buf[0], bytes); | |
11842 | callbacks->received (view); | |
11843 | } | |
11844 | ||
11845 | /* Entry point for the 'maint packet' command. */ | |
11846 | ||
11847 | static void | |
11848 | cli_packet_command (const char *args, int from_tty) | |
11849 | { | |
11850 | cli_packet_command_callbacks cb; | |
11851 | gdb::array_view<const char> view | |
11852 | = gdb::make_array_view (args, args == nullptr ? 0 : strlen (args)); | |
11853 | send_remote_packet (view, &cb); | |
c906108c SS |
11854 | } |
11855 | ||
11856 | #if 0 | |
23860348 | 11857 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 11858 | |
a14ed312 | 11859 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 11860 | |
a14ed312 | 11861 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 11862 | |
a14ed312 | 11863 | static void threadalive_test (char *cmd, int tty); |
c906108c | 11864 | |
a14ed312 | 11865 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 11866 | |
23860348 | 11867 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 11868 | |
a14ed312 | 11869 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 11870 | |
23860348 | 11871 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 11872 | |
a14ed312 | 11873 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 11874 | |
a14ed312 | 11875 | static void init_remote_threadtests (void); |
c906108c | 11876 | |
23860348 | 11877 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
11878 | |
11879 | static void | |
0b39b52e | 11880 | threadset_test_cmd (const char *cmd, int tty) |
c906108c SS |
11881 | { |
11882 | int sample_thread = SAMPLE_THREAD; | |
11883 | ||
6cb06a8c | 11884 | gdb_printf (_("Remote threadset test\n")); |
79d7f229 | 11885 | set_general_thread (sample_thread); |
c906108c SS |
11886 | } |
11887 | ||
11888 | ||
11889 | static void | |
0b39b52e | 11890 | threadalive_test (const char *cmd, int tty) |
c906108c SS |
11891 | { |
11892 | int sample_thread = SAMPLE_THREAD; | |
e99b03dc | 11893 | int pid = inferior_ptid.pid (); |
fd79271b | 11894 | ptid_t ptid = ptid_t (pid, sample_thread, 0); |
c906108c | 11895 | |
79d7f229 | 11896 | if (remote_thread_alive (ptid)) |
6cb06a8c | 11897 | gdb_printf ("PASS: Thread alive test\n"); |
c906108c | 11898 | else |
6cb06a8c | 11899 | gdb_printf ("FAIL: Thread alive test\n"); |
c906108c SS |
11900 | } |
11901 | ||
23860348 | 11902 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
11903 | |
11904 | void | |
fba45db2 | 11905 | output_threadid (char *title, threadref *ref) |
c906108c SS |
11906 | { |
11907 | char hexid[20]; | |
11908 | ||
405feb71 | 11909 | pack_threadid (&hexid[0], ref); /* Convert thread id into hex. */ |
c906108c | 11910 | hexid[16] = 0; |
6cb06a8c | 11911 | gdb_printf ("%s %s\n", title, (&hexid[0])); |
c906108c SS |
11912 | } |
11913 | ||
11914 | static void | |
0b39b52e | 11915 | threadlist_test_cmd (const char *cmd, int tty) |
c906108c SS |
11916 | { |
11917 | int startflag = 1; | |
11918 | threadref nextthread; | |
11919 | int done, result_count; | |
11920 | threadref threadlist[3]; | |
11921 | ||
6cb06a8c | 11922 | gdb_printf ("Remote Threadlist test\n"); |
c906108c SS |
11923 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, |
11924 | &result_count, &threadlist[0])) | |
6cb06a8c | 11925 | gdb_printf ("FAIL: threadlist test\n"); |
c906108c SS |
11926 | else |
11927 | { | |
11928 | threadref *scan = threadlist; | |
11929 | threadref *limit = scan + result_count; | |
11930 | ||
11931 | while (scan < limit) | |
11932 | output_threadid (" thread ", scan++); | |
11933 | } | |
11934 | } | |
11935 | ||
11936 | void | |
fba45db2 | 11937 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
11938 | { |
11939 | output_threadid ("Threadid: ", &info->threadid); | |
6cb06a8c TT |
11940 | gdb_printf ("Name: %s\n ", info->shortname); |
11941 | gdb_printf ("State: %s\n", info->display); | |
11942 | gdb_printf ("other: %s\n\n", info->more_display); | |
c906108c SS |
11943 | } |
11944 | ||
11945 | int | |
fba45db2 | 11946 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
11947 | { |
11948 | int result; | |
11949 | int set; | |
11950 | struct gdb_ext_thread_info threadinfo; | |
11951 | ||
11952 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
11953 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
11954 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
11955 | display_thread_info (&threadinfo); | |
11956 | return result; | |
11957 | } | |
11958 | ||
11959 | static void | |
0b39b52e | 11960 | threadinfo_test_cmd (const char *cmd, int tty) |
c906108c SS |
11961 | { |
11962 | int athread = SAMPLE_THREAD; | |
11963 | threadref thread; | |
11964 | int set; | |
11965 | ||
11966 | int_to_threadref (&thread, athread); | |
6cb06a8c | 11967 | gdb_printf ("Remote Threadinfo test\n"); |
c906108c | 11968 | if (!get_and_display_threadinfo (&thread)) |
6cb06a8c | 11969 | gdb_printf ("FAIL cannot get thread info\n"); |
c906108c SS |
11970 | } |
11971 | ||
11972 | static int | |
fba45db2 | 11973 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
11974 | { |
11975 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
11976 | return get_and_display_threadinfo (ref); | |
11977 | } | |
11978 | ||
11979 | static void | |
0b39b52e | 11980 | threadlist_update_test_cmd (const char *cmd, int tty) |
c906108c | 11981 | { |
6cb06a8c | 11982 | gdb_printf ("Remote Threadlist update test\n"); |
c906108c SS |
11983 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); |
11984 | } | |
11985 | ||
11986 | static void | |
11987 | init_remote_threadtests (void) | |
11988 | { | |
3e43a32a MS |
11989 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
11990 | _("Fetch and print the remote list of " | |
590042fc | 11991 | "thread identifiers, one pkt only.")); |
c906108c | 11992 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
590042fc | 11993 | _("Fetch and display info about one thread.")); |
c906108c | 11994 | add_com ("tset", class_obscure, threadset_test_cmd, |
590042fc | 11995 | _("Test setting to a different thread.")); |
c906108c | 11996 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
590042fc | 11997 | _("Iterate through updating all remote thread info.")); |
c906108c | 11998 | add_com ("talive", class_obscure, threadalive_test, |
590042fc | 11999 | _("Remote thread alive test.")); |
c906108c SS |
12000 | } |
12001 | ||
12002 | #endif /* 0 */ | |
12003 | ||
a068643d | 12004 | /* Convert a thread ID to a string. */ |
f3fb8c85 | 12005 | |
a068643d | 12006 | std::string |
f6ac5f3d | 12007 | remote_target::pid_to_str (ptid_t ptid) |
f3fb8c85 | 12008 | { |
d7e15655 | 12009 | if (ptid == null_ptid) |
7cee1e54 | 12010 | return normal_pid_to_str (ptid); |
0e998d96 | 12011 | else if (ptid.is_pid ()) |
ecd0ada5 PA |
12012 | { |
12013 | /* Printing an inferior target id. */ | |
12014 | ||
12015 | /* When multi-process extensions are off, there's no way in the | |
12016 | remote protocol to know the remote process id, if there's any | |
12017 | at all. There's one exception --- when we're connected with | |
12018 | target extended-remote, and we manually attached to a process | |
12019 | with "attach PID". We don't record anywhere a flag that | |
12020 | allows us to distinguish that case from the case of | |
12021 | connecting with extended-remote and the stub already being | |
12022 | attached to a process, and reporting yes to qAttached, hence | |
12023 | no smart special casing here. */ | |
ff52c073 | 12024 | if (!m_features.remote_multi_process_p ()) |
a068643d | 12025 | return "Remote target"; |
ecd0ada5 PA |
12026 | |
12027 | return normal_pid_to_str (ptid); | |
82f73884 | 12028 | } |
ecd0ada5 | 12029 | else |
79d7f229 | 12030 | { |
d7e15655 | 12031 | if (magic_null_ptid == ptid) |
a068643d | 12032 | return "Thread <main>"; |
ff52c073 | 12033 | else if (m_features.remote_multi_process_p ()) |
e38504b3 | 12034 | if (ptid.lwp () == 0) |
de0d863e DB |
12035 | return normal_pid_to_str (ptid); |
12036 | else | |
a068643d TT |
12037 | return string_printf ("Thread %d.%ld", |
12038 | ptid.pid (), ptid.lwp ()); | |
ecd0ada5 | 12039 | else |
a068643d | 12040 | return string_printf ("Thread %ld", ptid.lwp ()); |
79d7f229 | 12041 | } |
f3fb8c85 MS |
12042 | } |
12043 | ||
38691318 KB |
12044 | /* Get the address of the thread local variable in OBJFILE which is |
12045 | stored at OFFSET within the thread local storage for thread PTID. */ | |
12046 | ||
f6ac5f3d PA |
12047 | CORE_ADDR |
12048 | remote_target::get_thread_local_address (ptid_t ptid, CORE_ADDR lm, | |
12049 | CORE_ADDR offset) | |
38691318 | 12050 | { |
ff52c073 | 12051 | if (m_features.packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
12052 | { |
12053 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
12054 | char *p = rs->buf.data (); |
12055 | char *endp = p + get_remote_packet_size (); | |
571dd617 | 12056 | enum packet_result result; |
38691318 KB |
12057 | |
12058 | strcpy (p, "qGetTLSAddr:"); | |
12059 | p += strlen (p); | |
82f73884 | 12060 | p = write_ptid (p, endp, ptid); |
38691318 KB |
12061 | *p++ = ','; |
12062 | p += hexnumstr (p, offset); | |
12063 | *p++ = ','; | |
12064 | p += hexnumstr (p, lm); | |
12065 | *p++ = '\0'; | |
12066 | ||
6d820c5c | 12067 | putpkt (rs->buf); |
8d64371b | 12068 | getpkt (&rs->buf, 0); |
ff52c073 | 12069 | result = m_features.packet_ok (rs->buf, PACKET_qGetTLSAddr); |
571dd617 | 12070 | if (result == PACKET_OK) |
38691318 | 12071 | { |
b926417a | 12072 | ULONGEST addr; |
38691318 | 12073 | |
8d64371b | 12074 | unpack_varlen_hex (rs->buf.data (), &addr); |
b926417a | 12075 | return addr; |
38691318 | 12076 | } |
571dd617 | 12077 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
12078 | throw_error (TLS_GENERIC_ERROR, |
12079 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 12080 | else |
109c3e39 AC |
12081 | throw_error (TLS_GENERIC_ERROR, |
12082 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
12083 | } |
12084 | else | |
109c3e39 AC |
12085 | throw_error (TLS_GENERIC_ERROR, |
12086 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
12087 | /* Not reached. */ |
12088 | return 0; | |
12089 | } | |
12090 | ||
711e434b PM |
12091 | /* Provide thread local base, i.e. Thread Information Block address. |
12092 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
12093 | ||
57810aa7 | 12094 | bool |
f6ac5f3d | 12095 | remote_target::get_tib_address (ptid_t ptid, CORE_ADDR *addr) |
711e434b | 12096 | { |
ff52c073 | 12097 | if (m_features.packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
12098 | { |
12099 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
12100 | char *p = rs->buf.data (); |
12101 | char *endp = p + get_remote_packet_size (); | |
711e434b PM |
12102 | enum packet_result result; |
12103 | ||
12104 | strcpy (p, "qGetTIBAddr:"); | |
12105 | p += strlen (p); | |
12106 | p = write_ptid (p, endp, ptid); | |
12107 | *p++ = '\0'; | |
12108 | ||
12109 | putpkt (rs->buf); | |
8d64371b | 12110 | getpkt (&rs->buf, 0); |
ff52c073 | 12111 | result = m_features.packet_ok (rs->buf, PACKET_qGetTIBAddr); |
711e434b PM |
12112 | if (result == PACKET_OK) |
12113 | { | |
b926417a | 12114 | ULONGEST val; |
8d64371b | 12115 | unpack_varlen_hex (rs->buf.data (), &val); |
711e434b | 12116 | if (addr) |
b926417a | 12117 | *addr = (CORE_ADDR) val; |
57810aa7 | 12118 | return true; |
711e434b PM |
12119 | } |
12120 | else if (result == PACKET_UNKNOWN) | |
12121 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
12122 | else | |
12123 | error (_("Remote target failed to process qGetTIBAddr request")); | |
12124 | } | |
12125 | else | |
12126 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
12127 | /* Not reached. */ | |
57810aa7 | 12128 | return false; |
711e434b PM |
12129 | } |
12130 | ||
29709017 DJ |
12131 | /* Support for inferring a target description based on the current |
12132 | architecture and the size of a 'g' packet. While the 'g' packet | |
12133 | can have any size (since optional registers can be left off the | |
12134 | end), some sizes are easily recognizable given knowledge of the | |
12135 | approximate architecture. */ | |
12136 | ||
12137 | struct remote_g_packet_guess | |
12138 | { | |
eefce37f TT |
12139 | remote_g_packet_guess (int bytes_, const struct target_desc *tdesc_) |
12140 | : bytes (bytes_), | |
12141 | tdesc (tdesc_) | |
12142 | { | |
12143 | } | |
12144 | ||
29709017 DJ |
12145 | int bytes; |
12146 | const struct target_desc *tdesc; | |
12147 | }; | |
29709017 | 12148 | |
cb275538 | 12149 | struct remote_g_packet_data |
29709017 | 12150 | { |
eefce37f | 12151 | std::vector<remote_g_packet_guess> guesses; |
29709017 DJ |
12152 | }; |
12153 | ||
cb275538 TT |
12154 | static const registry<gdbarch>::key<struct remote_g_packet_data> |
12155 | remote_g_packet_data_handle; | |
29709017 | 12156 | |
cb275538 TT |
12157 | static struct remote_g_packet_data * |
12158 | get_g_packet_data (struct gdbarch *gdbarch) | |
29709017 | 12159 | { |
cb275538 TT |
12160 | struct remote_g_packet_data *data |
12161 | = remote_g_packet_data_handle.get (gdbarch); | |
12162 | if (data == nullptr) | |
12163 | data = remote_g_packet_data_handle.emplace (gdbarch); | |
12164 | return data; | |
29709017 DJ |
12165 | } |
12166 | ||
12167 | void | |
12168 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
12169 | const struct target_desc *tdesc) | |
12170 | { | |
cb275538 | 12171 | struct remote_g_packet_data *data = get_g_packet_data (gdbarch); |
29709017 DJ |
12172 | |
12173 | gdb_assert (tdesc != NULL); | |
12174 | ||
eefce37f TT |
12175 | for (const remote_g_packet_guess &guess : data->guesses) |
12176 | if (guess.bytes == bytes) | |
f34652de | 12177 | internal_error (_("Duplicate g packet description added for size %d"), |
29709017 DJ |
12178 | bytes); |
12179 | ||
eefce37f | 12180 | data->guesses.emplace_back (bytes, tdesc); |
29709017 DJ |
12181 | } |
12182 | ||
eefce37f TT |
12183 | /* Return true if remote_read_description would do anything on this target |
12184 | and architecture, false otherwise. */ | |
d962ef82 | 12185 | |
eefce37f | 12186 | static bool |
d962ef82 DJ |
12187 | remote_read_description_p (struct target_ops *target) |
12188 | { | |
cb275538 | 12189 | struct remote_g_packet_data *data = get_g_packet_data (target_gdbarch ()); |
d962ef82 | 12190 | |
eefce37f | 12191 | return !data->guesses.empty (); |
d962ef82 DJ |
12192 | } |
12193 | ||
f6ac5f3d PA |
12194 | const struct target_desc * |
12195 | remote_target::read_description () | |
29709017 | 12196 | { |
cb275538 | 12197 | struct remote_g_packet_data *data = get_g_packet_data (target_gdbarch ()); |
29709017 | 12198 | |
d962ef82 DJ |
12199 | /* Do not try this during initial connection, when we do not know |
12200 | whether there is a running but stopped thread. */ | |
55f6301a | 12201 | if (!target_has_execution () || inferior_ptid == null_ptid) |
b6a8c27b | 12202 | return beneath ()->read_description (); |
d962ef82 | 12203 | |
eefce37f | 12204 | if (!data->guesses.empty ()) |
29709017 | 12205 | { |
29709017 DJ |
12206 | int bytes = send_g_packet (); |
12207 | ||
eefce37f TT |
12208 | for (const remote_g_packet_guess &guess : data->guesses) |
12209 | if (guess.bytes == bytes) | |
12210 | return guess.tdesc; | |
29709017 DJ |
12211 | |
12212 | /* We discard the g packet. A minor optimization would be to | |
12213 | hold on to it, and fill the register cache once we have selected | |
12214 | an architecture, but it's too tricky to do safely. */ | |
12215 | } | |
12216 | ||
b6a8c27b | 12217 | return beneath ()->read_description (); |
29709017 DJ |
12218 | } |
12219 | ||
a6b151f1 DJ |
12220 | /* Remote file transfer support. This is host-initiated I/O, not |
12221 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
12222 | ||
12223 | /* If *LEFT is at least the length of STRING, copy STRING to | |
12224 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
12225 | decrease *LEFT. Otherwise raise an error. */ | |
12226 | ||
12227 | static void | |
a121b7c1 | 12228 | remote_buffer_add_string (char **buffer, int *left, const char *string) |
a6b151f1 DJ |
12229 | { |
12230 | int len = strlen (string); | |
12231 | ||
12232 | if (len > *left) | |
12233 | error (_("Packet too long for target.")); | |
12234 | ||
12235 | memcpy (*buffer, string, len); | |
12236 | *buffer += len; | |
12237 | *left -= len; | |
12238 | ||
12239 | /* NUL-terminate the buffer as a convenience, if there is | |
12240 | room. */ | |
12241 | if (*left) | |
12242 | **buffer = '\0'; | |
12243 | } | |
12244 | ||
12245 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
12246 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
12247 | decrease *LEFT. Otherwise raise an error. */ | |
12248 | ||
12249 | static void | |
12250 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
12251 | int len) | |
12252 | { | |
12253 | if (2 * len > *left) | |
12254 | error (_("Packet too long for target.")); | |
12255 | ||
12256 | bin2hex (bytes, *buffer, len); | |
12257 | *buffer += 2 * len; | |
12258 | *left -= 2 * len; | |
12259 | ||
12260 | /* NUL-terminate the buffer as a convenience, if there is | |
12261 | room. */ | |
12262 | if (*left) | |
12263 | **buffer = '\0'; | |
12264 | } | |
12265 | ||
12266 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
12267 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
12268 | decrease *LEFT. Otherwise raise an error. */ | |
12269 | ||
12270 | static void | |
12271 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
12272 | { | |
12273 | int len = hexnumlen (value); | |
12274 | ||
12275 | if (len > *left) | |
12276 | error (_("Packet too long for target.")); | |
12277 | ||
12278 | hexnumstr (*buffer, value); | |
12279 | *buffer += len; | |
12280 | *left -= len; | |
12281 | ||
12282 | /* NUL-terminate the buffer as a convenience, if there is | |
12283 | room. */ | |
12284 | if (*left) | |
12285 | **buffer = '\0'; | |
12286 | } | |
12287 | ||
12288 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
b872057a | 12289 | value, *REMOTE_ERRNO to the remote error number or FILEIO_SUCCESS if none |
a6b151f1 DJ |
12290 | was included, and *ATTACHMENT to point to the start of the annex |
12291 | if any. The length of the packet isn't needed here; there may | |
12292 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
12293 | ||
12294 | Return 0 if the packet could be parsed, -1 if it could not. If | |
12295 | -1 is returned, the other variables may not be initialized. */ | |
12296 | ||
12297 | static int | |
aa2838cc | 12298 | remote_hostio_parse_result (const char *buffer, int *retcode, |
b872057a | 12299 | fileio_error *remote_errno, const char **attachment) |
a6b151f1 DJ |
12300 | { |
12301 | char *p, *p2; | |
12302 | ||
b872057a | 12303 | *remote_errno = FILEIO_SUCCESS; |
a6b151f1 DJ |
12304 | *attachment = NULL; |
12305 | ||
12306 | if (buffer[0] != 'F') | |
12307 | return -1; | |
12308 | ||
12309 | errno = 0; | |
12310 | *retcode = strtol (&buffer[1], &p, 16); | |
12311 | if (errno != 0 || p == &buffer[1]) | |
12312 | return -1; | |
12313 | ||
12314 | /* Check for ",errno". */ | |
12315 | if (*p == ',') | |
12316 | { | |
12317 | errno = 0; | |
b872057a | 12318 | *remote_errno = (fileio_error) strtol (p + 1, &p2, 16); |
a6b151f1 DJ |
12319 | if (errno != 0 || p + 1 == p2) |
12320 | return -1; | |
12321 | p = p2; | |
12322 | } | |
12323 | ||
12324 | /* Check for ";attachment". If there is no attachment, the | |
12325 | packet should end here. */ | |
12326 | if (*p == ';') | |
12327 | { | |
12328 | *attachment = p + 1; | |
12329 | return 0; | |
12330 | } | |
12331 | else if (*p == '\0') | |
12332 | return 0; | |
12333 | else | |
12334 | return -1; | |
12335 | } | |
12336 | ||
12337 | /* Send a prepared I/O packet to the target and read its response. | |
12338 | The prepared packet is in the global RS->BUF before this function | |
12339 | is called, and the answer is there when we return. | |
12340 | ||
12341 | COMMAND_BYTES is the length of the request to send, which may include | |
12342 | binary data. WHICH_PACKET is the packet configuration to check | |
12343 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
12344 | is set to the error number and -1 is returned. Otherwise the value | |
12345 | returned by the function is returned. | |
12346 | ||
12347 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
12348 | attachment is expected; an error will be reported if there's a | |
12349 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
12350 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
12351 | attachment's length. */ | |
12352 | ||
6b8edb51 PA |
12353 | int |
12354 | remote_target::remote_hostio_send_command (int command_bytes, int which_packet, | |
b872057a | 12355 | fileio_error *remote_errno, const char **attachment, |
6b8edb51 | 12356 | int *attachment_len) |
a6b151f1 DJ |
12357 | { |
12358 | struct remote_state *rs = get_remote_state (); | |
12359 | int ret, bytes_read; | |
aa2838cc | 12360 | const char *attachment_tmp; |
a6b151f1 | 12361 | |
ff52c073 | 12362 | if (m_features.packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
12363 | { |
12364 | *remote_errno = FILEIO_ENOSYS; | |
12365 | return -1; | |
12366 | } | |
12367 | ||
8d64371b TT |
12368 | putpkt_binary (rs->buf.data (), command_bytes); |
12369 | bytes_read = getpkt_sane (&rs->buf, 0); | |
a6b151f1 DJ |
12370 | |
12371 | /* If it timed out, something is wrong. Don't try to parse the | |
12372 | buffer. */ | |
12373 | if (bytes_read < 0) | |
12374 | { | |
12375 | *remote_errno = FILEIO_EINVAL; | |
12376 | return -1; | |
12377 | } | |
12378 | ||
ff52c073 | 12379 | switch (m_features.packet_ok (rs->buf, which_packet)) |
a6b151f1 DJ |
12380 | { |
12381 | case PACKET_ERROR: | |
12382 | *remote_errno = FILEIO_EINVAL; | |
12383 | return -1; | |
12384 | case PACKET_UNKNOWN: | |
12385 | *remote_errno = FILEIO_ENOSYS; | |
12386 | return -1; | |
12387 | case PACKET_OK: | |
12388 | break; | |
12389 | } | |
12390 | ||
8d64371b | 12391 | if (remote_hostio_parse_result (rs->buf.data (), &ret, remote_errno, |
a6b151f1 DJ |
12392 | &attachment_tmp)) |
12393 | { | |
12394 | *remote_errno = FILEIO_EINVAL; | |
12395 | return -1; | |
12396 | } | |
12397 | ||
12398 | /* Make sure we saw an attachment if and only if we expected one. */ | |
12399 | if ((attachment_tmp == NULL && attachment != NULL) | |
12400 | || (attachment_tmp != NULL && attachment == NULL)) | |
12401 | { | |
12402 | *remote_errno = FILEIO_EINVAL; | |
12403 | return -1; | |
12404 | } | |
12405 | ||
12406 | /* If an attachment was found, it must point into the packet buffer; | |
12407 | work out how many bytes there were. */ | |
12408 | if (attachment_tmp != NULL) | |
12409 | { | |
12410 | *attachment = attachment_tmp; | |
8d64371b | 12411 | *attachment_len = bytes_read - (*attachment - rs->buf.data ()); |
a6b151f1 DJ |
12412 | } |
12413 | ||
12414 | return ret; | |
12415 | } | |
12416 | ||
dd194f6b | 12417 | /* See declaration.h. */ |
80152258 | 12418 | |
dd194f6b PA |
12419 | void |
12420 | readahead_cache::invalidate () | |
80152258 | 12421 | { |
dd194f6b | 12422 | this->fd = -1; |
80152258 PA |
12423 | } |
12424 | ||
dd194f6b | 12425 | /* See declaration.h. */ |
80152258 | 12426 | |
dd194f6b PA |
12427 | void |
12428 | readahead_cache::invalidate_fd (int fd) | |
80152258 | 12429 | { |
dd194f6b PA |
12430 | if (this->fd == fd) |
12431 | this->fd = -1; | |
80152258 PA |
12432 | } |
12433 | ||
15a201c8 GB |
12434 | /* Set the filesystem remote_hostio functions that take FILENAME |
12435 | arguments will use. Return 0 on success, or -1 if an error | |
12436 | occurs (and set *REMOTE_ERRNO). */ | |
12437 | ||
6b8edb51 PA |
12438 | int |
12439 | remote_target::remote_hostio_set_filesystem (struct inferior *inf, | |
b872057a | 12440 | fileio_error *remote_errno) |
15a201c8 GB |
12441 | { |
12442 | struct remote_state *rs = get_remote_state (); | |
12443 | int required_pid = (inf == NULL || inf->fake_pid_p) ? 0 : inf->pid; | |
8d64371b | 12444 | char *p = rs->buf.data (); |
15a201c8 GB |
12445 | int left = get_remote_packet_size () - 1; |
12446 | char arg[9]; | |
12447 | int ret; | |
12448 | ||
ff52c073 | 12449 | if (m_features.packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) |
15a201c8 GB |
12450 | return 0; |
12451 | ||
12452 | if (rs->fs_pid != -1 && required_pid == rs->fs_pid) | |
12453 | return 0; | |
12454 | ||
12455 | remote_buffer_add_string (&p, &left, "vFile:setfs:"); | |
12456 | ||
12457 | xsnprintf (arg, sizeof (arg), "%x", required_pid); | |
12458 | remote_buffer_add_string (&p, &left, arg); | |
12459 | ||
8d64371b | 12460 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_setfs, |
15a201c8 GB |
12461 | remote_errno, NULL, NULL); |
12462 | ||
ff52c073 | 12463 | if (m_features.packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) |
15a201c8 GB |
12464 | return 0; |
12465 | ||
12466 | if (ret == 0) | |
12467 | rs->fs_pid = required_pid; | |
12468 | ||
12469 | return ret; | |
12470 | } | |
12471 | ||
12e2a5fd | 12472 | /* Implementation of to_fileio_open. */ |
a6b151f1 | 12473 | |
6b8edb51 PA |
12474 | int |
12475 | remote_target::remote_hostio_open (inferior *inf, const char *filename, | |
12476 | int flags, int mode, int warn_if_slow, | |
b872057a | 12477 | fileio_error *remote_errno) |
a6b151f1 DJ |
12478 | { |
12479 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12480 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12481 | int left = get_remote_packet_size () - 1; |
12482 | ||
4313b8c0 GB |
12483 | if (warn_if_slow) |
12484 | { | |
12485 | static int warning_issued = 0; | |
12486 | ||
6cb06a8c TT |
12487 | gdb_printf (_("Reading %s from remote target...\n"), |
12488 | filename); | |
4313b8c0 GB |
12489 | |
12490 | if (!warning_issued) | |
12491 | { | |
12492 | warning (_("File transfers from remote targets can be slow." | |
12493 | " Use \"set sysroot\" to access files locally" | |
12494 | " instead.")); | |
12495 | warning_issued = 1; | |
12496 | } | |
12497 | } | |
12498 | ||
15a201c8 GB |
12499 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
12500 | return -1; | |
12501 | ||
a6b151f1 DJ |
12502 | remote_buffer_add_string (&p, &left, "vFile:open:"); |
12503 | ||
12504 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12505 | strlen (filename)); | |
12506 | remote_buffer_add_string (&p, &left, ","); | |
12507 | ||
12508 | remote_buffer_add_int (&p, &left, flags); | |
12509 | remote_buffer_add_string (&p, &left, ","); | |
12510 | ||
12511 | remote_buffer_add_int (&p, &left, mode); | |
12512 | ||
8d64371b | 12513 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_open, |
a6b151f1 DJ |
12514 | remote_errno, NULL, NULL); |
12515 | } | |
12516 | ||
f6ac5f3d PA |
12517 | int |
12518 | remote_target::fileio_open (struct inferior *inf, const char *filename, | |
12519 | int flags, int mode, int warn_if_slow, | |
b872057a | 12520 | fileio_error *remote_errno) |
f6ac5f3d | 12521 | { |
6b8edb51 | 12522 | return remote_hostio_open (inf, filename, flags, mode, warn_if_slow, |
f6ac5f3d PA |
12523 | remote_errno); |
12524 | } | |
12525 | ||
12e2a5fd | 12526 | /* Implementation of to_fileio_pwrite. */ |
a6b151f1 | 12527 | |
6b8edb51 PA |
12528 | int |
12529 | remote_target::remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
b872057a | 12530 | ULONGEST offset, fileio_error *remote_errno) |
a6b151f1 DJ |
12531 | { |
12532 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12533 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12534 | int left = get_remote_packet_size (); |
12535 | int out_len; | |
12536 | ||
dd194f6b | 12537 | rs->readahead_cache.invalidate_fd (fd); |
80152258 | 12538 | |
a6b151f1 DJ |
12539 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); |
12540 | ||
12541 | remote_buffer_add_int (&p, &left, fd); | |
12542 | remote_buffer_add_string (&p, &left, ","); | |
12543 | ||
12544 | remote_buffer_add_int (&p, &left, offset); | |
12545 | remote_buffer_add_string (&p, &left, ","); | |
12546 | ||
124e13d9 | 12547 | p += remote_escape_output (write_buf, len, 1, (gdb_byte *) p, &out_len, |
8d64371b TT |
12548 | (get_remote_packet_size () |
12549 | - (p - rs->buf.data ()))); | |
a6b151f1 | 12550 | |
8d64371b | 12551 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_pwrite, |
a6b151f1 DJ |
12552 | remote_errno, NULL, NULL); |
12553 | } | |
12554 | ||
f6ac5f3d PA |
12555 | int |
12556 | remote_target::fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
b872057a | 12557 | ULONGEST offset, fileio_error *remote_errno) |
f6ac5f3d | 12558 | { |
6b8edb51 | 12559 | return remote_hostio_pwrite (fd, write_buf, len, offset, remote_errno); |
f6ac5f3d PA |
12560 | } |
12561 | ||
80152258 PA |
12562 | /* Helper for the implementation of to_fileio_pread. Read the file |
12563 | from the remote side with vFile:pread. */ | |
a6b151f1 | 12564 | |
6b8edb51 PA |
12565 | int |
12566 | remote_target::remote_hostio_pread_vFile (int fd, gdb_byte *read_buf, int len, | |
b872057a | 12567 | ULONGEST offset, fileio_error *remote_errno) |
a6b151f1 DJ |
12568 | { |
12569 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12570 | char *p = rs->buf.data (); |
aa2838cc | 12571 | const char *attachment; |
a6b151f1 DJ |
12572 | int left = get_remote_packet_size (); |
12573 | int ret, attachment_len; | |
12574 | int read_len; | |
12575 | ||
12576 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
12577 | ||
12578 | remote_buffer_add_int (&p, &left, fd); | |
12579 | remote_buffer_add_string (&p, &left, ","); | |
12580 | ||
12581 | remote_buffer_add_int (&p, &left, len); | |
12582 | remote_buffer_add_string (&p, &left, ","); | |
12583 | ||
12584 | remote_buffer_add_int (&p, &left, offset); | |
12585 | ||
8d64371b | 12586 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_pread, |
a6b151f1 DJ |
12587 | remote_errno, &attachment, |
12588 | &attachment_len); | |
12589 | ||
12590 | if (ret < 0) | |
12591 | return ret; | |
12592 | ||
bc20a4af | 12593 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
12594 | read_buf, len); |
12595 | if (read_len != ret) | |
12596 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
12597 | ||
12598 | return ret; | |
12599 | } | |
12600 | ||
dd194f6b | 12601 | /* See declaration.h. */ |
80152258 | 12602 | |
dd194f6b PA |
12603 | int |
12604 | readahead_cache::pread (int fd, gdb_byte *read_buf, size_t len, | |
12605 | ULONGEST offset) | |
80152258 | 12606 | { |
dd194f6b PA |
12607 | if (this->fd == fd |
12608 | && this->offset <= offset | |
6b19f38a | 12609 | && offset < this->offset + this->buf.size ()) |
80152258 | 12610 | { |
6b19f38a | 12611 | ULONGEST max = this->offset + this->buf.size (); |
80152258 PA |
12612 | |
12613 | if (offset + len > max) | |
12614 | len = max - offset; | |
12615 | ||
6b19f38a | 12616 | memcpy (read_buf, &this->buf[offset - this->offset], len); |
80152258 PA |
12617 | return len; |
12618 | } | |
12619 | ||
12620 | return 0; | |
12621 | } | |
12622 | ||
12623 | /* Implementation of to_fileio_pread. */ | |
12624 | ||
6b8edb51 PA |
12625 | int |
12626 | remote_target::remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
b872057a | 12627 | ULONGEST offset, fileio_error *remote_errno) |
80152258 PA |
12628 | { |
12629 | int ret; | |
12630 | struct remote_state *rs = get_remote_state (); | |
dd194f6b | 12631 | readahead_cache *cache = &rs->readahead_cache; |
80152258 | 12632 | |
dd194f6b | 12633 | ret = cache->pread (fd, read_buf, len, offset); |
80152258 PA |
12634 | if (ret > 0) |
12635 | { | |
12636 | cache->hit_count++; | |
12637 | ||
2189c312 SM |
12638 | remote_debug_printf ("readahead cache hit %s", |
12639 | pulongest (cache->hit_count)); | |
80152258 PA |
12640 | return ret; |
12641 | } | |
12642 | ||
12643 | cache->miss_count++; | |
2189c312 SM |
12644 | |
12645 | remote_debug_printf ("readahead cache miss %s", | |
12646 | pulongest (cache->miss_count)); | |
80152258 PA |
12647 | |
12648 | cache->fd = fd; | |
12649 | cache->offset = offset; | |
6b19f38a | 12650 | cache->buf.resize (get_remote_packet_size ()); |
80152258 | 12651 | |
6b19f38a TT |
12652 | ret = remote_hostio_pread_vFile (cache->fd, &cache->buf[0], |
12653 | cache->buf.size (), | |
80152258 PA |
12654 | cache->offset, remote_errno); |
12655 | if (ret <= 0) | |
12656 | { | |
dd194f6b | 12657 | cache->invalidate_fd (fd); |
80152258 PA |
12658 | return ret; |
12659 | } | |
12660 | ||
6b19f38a | 12661 | cache->buf.resize (ret); |
dd194f6b | 12662 | return cache->pread (fd, read_buf, len, offset); |
80152258 PA |
12663 | } |
12664 | ||
f6ac5f3d PA |
12665 | int |
12666 | remote_target::fileio_pread (int fd, gdb_byte *read_buf, int len, | |
b872057a | 12667 | ULONGEST offset, fileio_error *remote_errno) |
f6ac5f3d | 12668 | { |
6b8edb51 | 12669 | return remote_hostio_pread (fd, read_buf, len, offset, remote_errno); |
f6ac5f3d PA |
12670 | } |
12671 | ||
12e2a5fd | 12672 | /* Implementation of to_fileio_close. */ |
a6b151f1 | 12673 | |
6b8edb51 | 12674 | int |
b872057a | 12675 | remote_target::remote_hostio_close (int fd, fileio_error *remote_errno) |
a6b151f1 DJ |
12676 | { |
12677 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12678 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12679 | int left = get_remote_packet_size () - 1; |
12680 | ||
dd194f6b | 12681 | rs->readahead_cache.invalidate_fd (fd); |
80152258 | 12682 | |
a6b151f1 DJ |
12683 | remote_buffer_add_string (&p, &left, "vFile:close:"); |
12684 | ||
12685 | remote_buffer_add_int (&p, &left, fd); | |
12686 | ||
8d64371b | 12687 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_close, |
a6b151f1 DJ |
12688 | remote_errno, NULL, NULL); |
12689 | } | |
12690 | ||
f6ac5f3d | 12691 | int |
b872057a | 12692 | remote_target::fileio_close (int fd, fileio_error *remote_errno) |
f6ac5f3d | 12693 | { |
6b8edb51 | 12694 | return remote_hostio_close (fd, remote_errno); |
f6ac5f3d PA |
12695 | } |
12696 | ||
12e2a5fd | 12697 | /* Implementation of to_fileio_unlink. */ |
a6b151f1 | 12698 | |
6b8edb51 PA |
12699 | int |
12700 | remote_target::remote_hostio_unlink (inferior *inf, const char *filename, | |
b872057a | 12701 | fileio_error *remote_errno) |
a6b151f1 DJ |
12702 | { |
12703 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12704 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12705 | int left = get_remote_packet_size () - 1; |
12706 | ||
15a201c8 GB |
12707 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
12708 | return -1; | |
12709 | ||
a6b151f1 DJ |
12710 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); |
12711 | ||
12712 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12713 | strlen (filename)); | |
12714 | ||
8d64371b | 12715 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_unlink, |
a6b151f1 DJ |
12716 | remote_errno, NULL, NULL); |
12717 | } | |
12718 | ||
f6ac5f3d PA |
12719 | int |
12720 | remote_target::fileio_unlink (struct inferior *inf, const char *filename, | |
b872057a | 12721 | fileio_error *remote_errno) |
f6ac5f3d | 12722 | { |
6b8edb51 | 12723 | return remote_hostio_unlink (inf, filename, remote_errno); |
f6ac5f3d PA |
12724 | } |
12725 | ||
12e2a5fd | 12726 | /* Implementation of to_fileio_readlink. */ |
b9e7b9c3 | 12727 | |
f6ac5f3d PA |
12728 | gdb::optional<std::string> |
12729 | remote_target::fileio_readlink (struct inferior *inf, const char *filename, | |
b872057a | 12730 | fileio_error *remote_errno) |
b9e7b9c3 UW |
12731 | { |
12732 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12733 | char *p = rs->buf.data (); |
aa2838cc | 12734 | const char *attachment; |
b9e7b9c3 UW |
12735 | int left = get_remote_packet_size (); |
12736 | int len, attachment_len; | |
12737 | int read_len; | |
b9e7b9c3 | 12738 | |
15a201c8 | 12739 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
e0d3522b | 12740 | return {}; |
15a201c8 | 12741 | |
b9e7b9c3 UW |
12742 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); |
12743 | ||
12744 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12745 | strlen (filename)); | |
12746 | ||
8d64371b | 12747 | len = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_readlink, |
b9e7b9c3 UW |
12748 | remote_errno, &attachment, |
12749 | &attachment_len); | |
12750 | ||
12751 | if (len < 0) | |
e0d3522b | 12752 | return {}; |
b9e7b9c3 | 12753 | |
e0d3522b | 12754 | std::string ret (len, '\0'); |
b9e7b9c3 | 12755 | |
bc20a4af | 12756 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
e0d3522b | 12757 | (gdb_byte *) &ret[0], len); |
b9e7b9c3 UW |
12758 | if (read_len != len) |
12759 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
12760 | ||
b9e7b9c3 UW |
12761 | return ret; |
12762 | } | |
12763 | ||
12e2a5fd | 12764 | /* Implementation of to_fileio_fstat. */ |
0a93529c | 12765 | |
f6ac5f3d | 12766 | int |
b872057a | 12767 | remote_target::fileio_fstat (int fd, struct stat *st, fileio_error *remote_errno) |
0a93529c GB |
12768 | { |
12769 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12770 | char *p = rs->buf.data (); |
0a93529c GB |
12771 | int left = get_remote_packet_size (); |
12772 | int attachment_len, ret; | |
aa2838cc | 12773 | const char *attachment; |
0a93529c GB |
12774 | struct fio_stat fst; |
12775 | int read_len; | |
12776 | ||
464b0089 GB |
12777 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
12778 | ||
12779 | remote_buffer_add_int (&p, &left, fd); | |
12780 | ||
8d64371b | 12781 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_fstat, |
464b0089 GB |
12782 | remote_errno, &attachment, |
12783 | &attachment_len); | |
12784 | if (ret < 0) | |
0a93529c | 12785 | { |
464b0089 GB |
12786 | if (*remote_errno != FILEIO_ENOSYS) |
12787 | return ret; | |
12788 | ||
0a93529c GB |
12789 | /* Strictly we should return -1, ENOSYS here, but when |
12790 | "set sysroot remote:" was implemented in August 2008 | |
12791 | BFD's need for a stat function was sidestepped with | |
12792 | this hack. This was not remedied until March 2015 | |
12793 | so we retain the previous behavior to avoid breaking | |
12794 | compatibility. | |
12795 | ||
12796 | Note that the memset is a March 2015 addition; older | |
12797 | GDBs set st_size *and nothing else* so the structure | |
12798 | would have garbage in all other fields. This might | |
12799 | break something but retaining the previous behavior | |
12800 | here would be just too wrong. */ | |
12801 | ||
12802 | memset (st, 0, sizeof (struct stat)); | |
12803 | st->st_size = INT_MAX; | |
12804 | return 0; | |
12805 | } | |
12806 | ||
0a93529c GB |
12807 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
12808 | (gdb_byte *) &fst, sizeof (fst)); | |
12809 | ||
12810 | if (read_len != ret) | |
12811 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
12812 | ||
12813 | if (read_len != sizeof (fst)) | |
12814 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
12815 | read_len, (int) sizeof (fst)); | |
12816 | ||
12817 | remote_fileio_to_host_stat (&fst, st); | |
12818 | ||
12819 | return 0; | |
12820 | } | |
12821 | ||
12e2a5fd | 12822 | /* Implementation of to_filesystem_is_local. */ |
e3dd7556 | 12823 | |
57810aa7 | 12824 | bool |
f6ac5f3d | 12825 | remote_target::filesystem_is_local () |
e3dd7556 GB |
12826 | { |
12827 | /* Valgrind GDB presents itself as a remote target but works | |
12828 | on the local filesystem: it does not implement remote get | |
12829 | and users are not expected to set a sysroot. To handle | |
12830 | this case we treat the remote filesystem as local if the | |
12831 | sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub | |
12832 | does not support vFile:open. */ | |
e0700ba4 | 12833 | if (gdb_sysroot == TARGET_SYSROOT_PREFIX) |
e3dd7556 | 12834 | { |
ff52c073 | 12835 | packet_support ps = m_features.packet_support (PACKET_vFile_open); |
e3dd7556 GB |
12836 | |
12837 | if (ps == PACKET_SUPPORT_UNKNOWN) | |
12838 | { | |
b872057a SM |
12839 | int fd; |
12840 | fileio_error remote_errno; | |
e3dd7556 GB |
12841 | |
12842 | /* Try opening a file to probe support. The supplied | |
12843 | filename is irrelevant, we only care about whether | |
12844 | the stub recognizes the packet or not. */ | |
6b8edb51 | 12845 | fd = remote_hostio_open (NULL, "just probing", |
4313b8c0 | 12846 | FILEIO_O_RDONLY, 0700, 0, |
e3dd7556 GB |
12847 | &remote_errno); |
12848 | ||
12849 | if (fd >= 0) | |
6b8edb51 | 12850 | remote_hostio_close (fd, &remote_errno); |
e3dd7556 | 12851 | |
ff52c073 | 12852 | ps = m_features.packet_support (PACKET_vFile_open); |
e3dd7556 GB |
12853 | } |
12854 | ||
12855 | if (ps == PACKET_DISABLE) | |
12856 | { | |
12857 | static int warning_issued = 0; | |
12858 | ||
12859 | if (!warning_issued) | |
12860 | { | |
12861 | warning (_("remote target does not support file" | |
12862 | " transfer, attempting to access files" | |
12863 | " from local filesystem.")); | |
12864 | warning_issued = 1; | |
12865 | } | |
12866 | ||
57810aa7 | 12867 | return true; |
e3dd7556 GB |
12868 | } |
12869 | } | |
12870 | ||
57810aa7 | 12871 | return false; |
e3dd7556 GB |
12872 | } |
12873 | ||
a6b151f1 | 12874 | static char * |
b872057a | 12875 | remote_hostio_error (fileio_error errnum) |
a6b151f1 | 12876 | { |
517a63c2 | 12877 | int host_error = fileio_error_to_host (errnum); |
a6b151f1 DJ |
12878 | |
12879 | if (host_error == -1) | |
12880 | error (_("Unknown remote I/O error %d"), errnum); | |
12881 | else | |
12882 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
12883 | } | |
12884 | ||
440b7aec PA |
12885 | /* A RAII wrapper around a remote file descriptor. */ |
12886 | ||
12887 | class scoped_remote_fd | |
a6b151f1 | 12888 | { |
440b7aec | 12889 | public: |
6b8edb51 PA |
12890 | scoped_remote_fd (remote_target *remote, int fd) |
12891 | : m_remote (remote), m_fd (fd) | |
440b7aec PA |
12892 | { |
12893 | } | |
a6b151f1 | 12894 | |
440b7aec PA |
12895 | ~scoped_remote_fd () |
12896 | { | |
12897 | if (m_fd != -1) | |
12898 | { | |
12899 | try | |
12900 | { | |
b872057a | 12901 | fileio_error remote_errno; |
6b8edb51 | 12902 | m_remote->remote_hostio_close (m_fd, &remote_errno); |
440b7aec PA |
12903 | } |
12904 | catch (...) | |
12905 | { | |
12906 | /* Swallow exception before it escapes the dtor. If | |
12907 | something goes wrong, likely the connection is gone, | |
12908 | and there's nothing else that can be done. */ | |
12909 | } | |
12910 | } | |
12911 | } | |
12912 | ||
12913 | DISABLE_COPY_AND_ASSIGN (scoped_remote_fd); | |
12914 | ||
12915 | /* Release ownership of the file descriptor, and return it. */ | |
88a774b9 | 12916 | ATTRIBUTE_UNUSED_RESULT int release () noexcept |
440b7aec PA |
12917 | { |
12918 | int fd = m_fd; | |
12919 | m_fd = -1; | |
12920 | return fd; | |
12921 | } | |
12922 | ||
12923 | /* Return the owned file descriptor. */ | |
12924 | int get () const noexcept | |
12925 | { | |
12926 | return m_fd; | |
12927 | } | |
12928 | ||
12929 | private: | |
6b8edb51 PA |
12930 | /* The remote target. */ |
12931 | remote_target *m_remote; | |
12932 | ||
440b7aec PA |
12933 | /* The owned remote I/O file descriptor. */ |
12934 | int m_fd; | |
12935 | }; | |
a6b151f1 DJ |
12936 | |
12937 | void | |
12938 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
6b8edb51 PA |
12939 | { |
12940 | remote_target *remote = get_current_remote_target (); | |
12941 | ||
12942 | if (remote == nullptr) | |
12943 | error (_("command can only be used with remote target")); | |
12944 | ||
12945 | remote->remote_file_put (local_file, remote_file, from_tty); | |
12946 | } | |
12947 | ||
12948 | void | |
12949 | remote_target::remote_file_put (const char *local_file, const char *remote_file, | |
12950 | int from_tty) | |
a6b151f1 | 12951 | { |
b872057a SM |
12952 | int retcode, bytes, io_size; |
12953 | fileio_error remote_errno; | |
a6b151f1 DJ |
12954 | int bytes_in_buffer; |
12955 | int saw_eof; | |
12956 | ULONGEST offset; | |
a6b151f1 | 12957 | |
d419f42d | 12958 | gdb_file_up file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
12959 | if (file == NULL) |
12960 | perror_with_name (local_file); | |
a6b151f1 | 12961 | |
440b7aec | 12962 | scoped_remote_fd fd |
6b8edb51 PA |
12963 | (this, remote_hostio_open (NULL, |
12964 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
12965 | | FILEIO_O_TRUNC), | |
12966 | 0700, 0, &remote_errno)); | |
440b7aec | 12967 | if (fd.get () == -1) |
a6b151f1 DJ |
12968 | remote_hostio_error (remote_errno); |
12969 | ||
12970 | /* Send up to this many bytes at once. They won't all fit in the | |
12971 | remote packet limit, so we'll transfer slightly fewer. */ | |
12972 | io_size = get_remote_packet_size (); | |
5ca3b260 | 12973 | gdb::byte_vector buffer (io_size); |
a6b151f1 | 12974 | |
a6b151f1 DJ |
12975 | bytes_in_buffer = 0; |
12976 | saw_eof = 0; | |
12977 | offset = 0; | |
12978 | while (bytes_in_buffer || !saw_eof) | |
12979 | { | |
12980 | if (!saw_eof) | |
12981 | { | |
5ca3b260 | 12982 | bytes = fread (buffer.data () + bytes_in_buffer, 1, |
3e43a32a | 12983 | io_size - bytes_in_buffer, |
d419f42d | 12984 | file.get ()); |
a6b151f1 DJ |
12985 | if (bytes == 0) |
12986 | { | |
d419f42d | 12987 | if (ferror (file.get ())) |
a6b151f1 DJ |
12988 | error (_("Error reading %s."), local_file); |
12989 | else | |
12990 | { | |
12991 | /* EOF. Unless there is something still in the | |
12992 | buffer from the last iteration, we are done. */ | |
12993 | saw_eof = 1; | |
12994 | if (bytes_in_buffer == 0) | |
12995 | break; | |
12996 | } | |
12997 | } | |
12998 | } | |
12999 | else | |
13000 | bytes = 0; | |
13001 | ||
13002 | bytes += bytes_in_buffer; | |
13003 | bytes_in_buffer = 0; | |
13004 | ||
5ca3b260 | 13005 | retcode = remote_hostio_pwrite (fd.get (), buffer.data (), bytes, |
3e43a32a | 13006 | offset, &remote_errno); |
a6b151f1 DJ |
13007 | |
13008 | if (retcode < 0) | |
13009 | remote_hostio_error (remote_errno); | |
13010 | else if (retcode == 0) | |
13011 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
13012 | else if (retcode < bytes) | |
13013 | { | |
13014 | /* Short write. Save the rest of the read data for the next | |
13015 | write. */ | |
13016 | bytes_in_buffer = bytes - retcode; | |
5ca3b260 | 13017 | memmove (buffer.data (), buffer.data () + retcode, bytes_in_buffer); |
a6b151f1 DJ |
13018 | } |
13019 | ||
13020 | offset += retcode; | |
13021 | } | |
13022 | ||
6b8edb51 | 13023 | if (remote_hostio_close (fd.release (), &remote_errno)) |
a6b151f1 DJ |
13024 | remote_hostio_error (remote_errno); |
13025 | ||
13026 | if (from_tty) | |
6cb06a8c | 13027 | gdb_printf (_("Successfully sent file \"%s\".\n"), local_file); |
a6b151f1 DJ |
13028 | } |
13029 | ||
13030 | void | |
13031 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
6b8edb51 PA |
13032 | { |
13033 | remote_target *remote = get_current_remote_target (); | |
13034 | ||
13035 | if (remote == nullptr) | |
13036 | error (_("command can only be used with remote target")); | |
13037 | ||
13038 | remote->remote_file_get (remote_file, local_file, from_tty); | |
13039 | } | |
13040 | ||
13041 | void | |
13042 | remote_target::remote_file_get (const char *remote_file, const char *local_file, | |
13043 | int from_tty) | |
a6b151f1 | 13044 | { |
b872057a SM |
13045 | fileio_error remote_errno; |
13046 | int bytes, io_size; | |
a6b151f1 | 13047 | ULONGEST offset; |
a6b151f1 | 13048 | |
440b7aec | 13049 | scoped_remote_fd fd |
6b8edb51 PA |
13050 | (this, remote_hostio_open (NULL, |
13051 | remote_file, FILEIO_O_RDONLY, 0, 0, | |
13052 | &remote_errno)); | |
440b7aec | 13053 | if (fd.get () == -1) |
a6b151f1 DJ |
13054 | remote_hostio_error (remote_errno); |
13055 | ||
d419f42d | 13056 | gdb_file_up file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
13057 | if (file == NULL) |
13058 | perror_with_name (local_file); | |
a6b151f1 DJ |
13059 | |
13060 | /* Send up to this many bytes at once. They won't all fit in the | |
13061 | remote packet limit, so we'll transfer slightly fewer. */ | |
13062 | io_size = get_remote_packet_size (); | |
5ca3b260 | 13063 | gdb::byte_vector buffer (io_size); |
a6b151f1 | 13064 | |
a6b151f1 DJ |
13065 | offset = 0; |
13066 | while (1) | |
13067 | { | |
5ca3b260 | 13068 | bytes = remote_hostio_pread (fd.get (), buffer.data (), io_size, offset, |
440b7aec | 13069 | &remote_errno); |
a6b151f1 DJ |
13070 | if (bytes == 0) |
13071 | /* Success, but no bytes, means end-of-file. */ | |
13072 | break; | |
13073 | if (bytes == -1) | |
13074 | remote_hostio_error (remote_errno); | |
13075 | ||
13076 | offset += bytes; | |
13077 | ||
5ca3b260 | 13078 | bytes = fwrite (buffer.data (), 1, bytes, file.get ()); |
a6b151f1 DJ |
13079 | if (bytes == 0) |
13080 | perror_with_name (local_file); | |
13081 | } | |
13082 | ||
6b8edb51 | 13083 | if (remote_hostio_close (fd.release (), &remote_errno)) |
a6b151f1 DJ |
13084 | remote_hostio_error (remote_errno); |
13085 | ||
13086 | if (from_tty) | |
6cb06a8c | 13087 | gdb_printf (_("Successfully fetched file \"%s\".\n"), remote_file); |
a6b151f1 DJ |
13088 | } |
13089 | ||
13090 | void | |
13091 | remote_file_delete (const char *remote_file, int from_tty) | |
13092 | { | |
6b8edb51 | 13093 | remote_target *remote = get_current_remote_target (); |
a6b151f1 | 13094 | |
6b8edb51 | 13095 | if (remote == nullptr) |
a6b151f1 DJ |
13096 | error (_("command can only be used with remote target")); |
13097 | ||
6b8edb51 PA |
13098 | remote->remote_file_delete (remote_file, from_tty); |
13099 | } | |
13100 | ||
13101 | void | |
13102 | remote_target::remote_file_delete (const char *remote_file, int from_tty) | |
13103 | { | |
b872057a SM |
13104 | int retcode; |
13105 | fileio_error remote_errno; | |
6b8edb51 PA |
13106 | |
13107 | retcode = remote_hostio_unlink (NULL, remote_file, &remote_errno); | |
a6b151f1 DJ |
13108 | if (retcode == -1) |
13109 | remote_hostio_error (remote_errno); | |
13110 | ||
13111 | if (from_tty) | |
6cb06a8c | 13112 | gdb_printf (_("Successfully deleted file \"%s\".\n"), remote_file); |
a6b151f1 DJ |
13113 | } |
13114 | ||
13115 | static void | |
ac88e2de | 13116 | remote_put_command (const char *args, int from_tty) |
a6b151f1 | 13117 | { |
d1a41061 PP |
13118 | if (args == NULL) |
13119 | error_no_arg (_("file to put")); | |
13120 | ||
773a1edc | 13121 | gdb_argv argv (args); |
a6b151f1 DJ |
13122 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
13123 | error (_("Invalid parameters to remote put")); | |
13124 | ||
13125 | remote_file_put (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
13126 | } |
13127 | ||
13128 | static void | |
ac88e2de | 13129 | remote_get_command (const char *args, int from_tty) |
a6b151f1 | 13130 | { |
d1a41061 PP |
13131 | if (args == NULL) |
13132 | error_no_arg (_("file to get")); | |
13133 | ||
773a1edc | 13134 | gdb_argv argv (args); |
a6b151f1 DJ |
13135 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
13136 | error (_("Invalid parameters to remote get")); | |
13137 | ||
13138 | remote_file_get (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
13139 | } |
13140 | ||
13141 | static void | |
ac88e2de | 13142 | remote_delete_command (const char *args, int from_tty) |
a6b151f1 | 13143 | { |
d1a41061 PP |
13144 | if (args == NULL) |
13145 | error_no_arg (_("file to delete")); | |
13146 | ||
773a1edc | 13147 | gdb_argv argv (args); |
a6b151f1 DJ |
13148 | if (argv[0] == NULL || argv[1] != NULL) |
13149 | error (_("Invalid parameters to remote delete")); | |
13150 | ||
13151 | remote_file_delete (argv[0], from_tty); | |
a6b151f1 DJ |
13152 | } |
13153 | ||
57810aa7 | 13154 | bool |
f6ac5f3d | 13155 | remote_target::can_execute_reverse () |
b2175913 | 13156 | { |
ff52c073 CS |
13157 | if (m_features.packet_support (PACKET_bs) == PACKET_ENABLE |
13158 | || m_features.packet_support (PACKET_bc) == PACKET_ENABLE) | |
57810aa7 | 13159 | return true; |
40ab02ce | 13160 | else |
57810aa7 | 13161 | return false; |
b2175913 MS |
13162 | } |
13163 | ||
57810aa7 | 13164 | bool |
f6ac5f3d | 13165 | remote_target::supports_non_stop () |
74531fed | 13166 | { |
57810aa7 | 13167 | return true; |
74531fed PA |
13168 | } |
13169 | ||
57810aa7 | 13170 | bool |
f6ac5f3d | 13171 | remote_target::supports_disable_randomization () |
03583c20 UW |
13172 | { |
13173 | /* Only supported in extended mode. */ | |
57810aa7 | 13174 | return false; |
03583c20 UW |
13175 | } |
13176 | ||
57810aa7 | 13177 | bool |
f6ac5f3d | 13178 | remote_target::supports_multi_process () |
8a305172 | 13179 | { |
ff52c073 | 13180 | return m_features.remote_multi_process_p (); |
8a305172 PA |
13181 | } |
13182 | ||
ff52c073 CS |
13183 | int |
13184 | remote_target::remote_supports_cond_tracepoints () | |
782b2b07 | 13185 | { |
ff52c073 CS |
13186 | return (m_features.packet_support (PACKET_ConditionalTracepoints) |
13187 | == PACKET_ENABLE); | |
782b2b07 SS |
13188 | } |
13189 | ||
57810aa7 | 13190 | bool |
f6ac5f3d | 13191 | remote_target::supports_evaluation_of_breakpoint_conditions () |
3788aec7 | 13192 | { |
ff52c073 CS |
13193 | return (m_features.packet_support (PACKET_ConditionalBreakpoints) |
13194 | == PACKET_ENABLE); | |
3788aec7 LM |
13195 | } |
13196 | ||
ff52c073 CS |
13197 | int |
13198 | remote_target::remote_supports_fast_tracepoints () | |
7a697b8d | 13199 | { |
ff52c073 | 13200 | return m_features.packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
13201 | } |
13202 | ||
ff52c073 CS |
13203 | int |
13204 | remote_target::remote_supports_static_tracepoints () | |
0fb4aa4b | 13205 | { |
ff52c073 | 13206 | return m_features.packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
13207 | } |
13208 | ||
ff52c073 CS |
13209 | int |
13210 | remote_target::remote_supports_install_in_trace () | |
1e4d1764 | 13211 | { |
ff52c073 | 13212 | return m_features.packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
13213 | } |
13214 | ||
57810aa7 | 13215 | bool |
f6ac5f3d | 13216 | remote_target::supports_enable_disable_tracepoint () |
d248b706 | 13217 | { |
ff52c073 | 13218 | return (m_features.packet_support (PACKET_EnableDisableTracepoints_feature) |
4082afcc | 13219 | == PACKET_ENABLE); |
d248b706 KY |
13220 | } |
13221 | ||
57810aa7 | 13222 | bool |
f6ac5f3d | 13223 | remote_target::supports_string_tracing () |
3065dfb6 | 13224 | { |
ff52c073 | 13225 | return m_features.packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
13226 | } |
13227 | ||
57810aa7 | 13228 | bool |
f6ac5f3d | 13229 | remote_target::can_run_breakpoint_commands () |
d3ce09f5 | 13230 | { |
ff52c073 | 13231 | return m_features.packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
13232 | } |
13233 | ||
f6ac5f3d PA |
13234 | void |
13235 | remote_target::trace_init () | |
35b1e5cc | 13236 | { |
b6bb3468 PA |
13237 | struct remote_state *rs = get_remote_state (); |
13238 | ||
35b1e5cc | 13239 | putpkt ("QTinit"); |
b6bb3468 | 13240 | remote_get_noisy_reply (); |
8d64371b | 13241 | if (strcmp (rs->buf.data (), "OK") != 0) |
35b1e5cc SS |
13242 | error (_("Target does not support this command.")); |
13243 | } | |
13244 | ||
409873ef SS |
13245 | /* Recursive routine to walk through command list including loops, and |
13246 | download packets for each command. */ | |
13247 | ||
6b8edb51 PA |
13248 | void |
13249 | remote_target::remote_download_command_source (int num, ULONGEST addr, | |
13250 | struct command_line *cmds) | |
409873ef SS |
13251 | { |
13252 | struct remote_state *rs = get_remote_state (); | |
13253 | struct command_line *cmd; | |
13254 | ||
13255 | for (cmd = cmds; cmd; cmd = cmd->next) | |
13256 | { | |
0df8b418 | 13257 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b | 13258 | strcpy (rs->buf.data (), "QTDPsrc:"); |
409873ef | 13259 | encode_source_string (num, addr, "cmd", cmd->line, |
8d64371b TT |
13260 | rs->buf.data () + strlen (rs->buf.data ()), |
13261 | rs->buf.size () - strlen (rs->buf.data ())); | |
409873ef | 13262 | putpkt (rs->buf); |
b6bb3468 | 13263 | remote_get_noisy_reply (); |
8d64371b | 13264 | if (strcmp (rs->buf.data (), "OK")) |
409873ef SS |
13265 | warning (_("Target does not support source download.")); |
13266 | ||
13267 | if (cmd->control_type == while_control | |
13268 | || cmd->control_type == while_stepping_control) | |
13269 | { | |
12973681 | 13270 | remote_download_command_source (num, addr, cmd->body_list_0.get ()); |
409873ef | 13271 | |
0df8b418 | 13272 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b | 13273 | strcpy (rs->buf.data (), "QTDPsrc:"); |
409873ef | 13274 | encode_source_string (num, addr, "cmd", "end", |
8d64371b TT |
13275 | rs->buf.data () + strlen (rs->buf.data ()), |
13276 | rs->buf.size () - strlen (rs->buf.data ())); | |
409873ef | 13277 | putpkt (rs->buf); |
b6bb3468 | 13278 | remote_get_noisy_reply (); |
8d64371b | 13279 | if (strcmp (rs->buf.data (), "OK")) |
409873ef SS |
13280 | warning (_("Target does not support source download.")); |
13281 | } | |
13282 | } | |
13283 | } | |
13284 | ||
f6ac5f3d PA |
13285 | void |
13286 | remote_target::download_tracepoint (struct bp_location *loc) | |
35b1e5cc SS |
13287 | { |
13288 | CORE_ADDR tpaddr; | |
409873ef | 13289 | char addrbuf[40]; |
b44ec619 SM |
13290 | std::vector<std::string> tdp_actions; |
13291 | std::vector<std::string> stepping_actions; | |
35b1e5cc | 13292 | char *pkt; |
e8ba3115 | 13293 | struct breakpoint *b = loc->owner; |
d9b3f62e | 13294 | struct tracepoint *t = (struct tracepoint *) b; |
b6bb3468 | 13295 | struct remote_state *rs = get_remote_state (); |
3df3a985 | 13296 | int ret; |
ff36536c | 13297 | const char *err_msg = _("Tracepoint packet too large for target."); |
3df3a985 PFC |
13298 | size_t size_left; |
13299 | ||
13300 | /* We use a buffer other than rs->buf because we'll build strings | |
13301 | across multiple statements, and other statements in between could | |
13302 | modify rs->buf. */ | |
13303 | gdb::char_vector buf (get_remote_packet_size ()); | |
35b1e5cc | 13304 | |
dc673c81 | 13305 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
13306 | |
13307 | tpaddr = loc->address; | |
53807e9f | 13308 | strcpy (addrbuf, phex (tpaddr, sizeof (CORE_ADDR))); |
3df3a985 PFC |
13309 | ret = snprintf (buf.data (), buf.size (), "QTDP:%x:%s:%c:%lx:%x", |
13310 | b->number, addrbuf, /* address */ | |
13311 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
13312 | t->step_count, t->pass_count); | |
13313 | ||
13314 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13315 | error ("%s", err_msg); |
3df3a985 | 13316 | |
e8ba3115 YQ |
13317 | /* Fast tracepoints are mostly handled by the target, but we can |
13318 | tell the target how big of an instruction block should be moved | |
13319 | around. */ | |
13320 | if (b->type == bp_fast_tracepoint) | |
13321 | { | |
13322 | /* Only test for support at download time; we may not know | |
13323 | target capabilities at definition time. */ | |
13324 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 13325 | { |
6b940e6a PL |
13326 | if (gdbarch_fast_tracepoint_valid_at (loc->gdbarch, tpaddr, |
13327 | NULL)) | |
3df3a985 PFC |
13328 | { |
13329 | size_left = buf.size () - strlen (buf.data ()); | |
13330 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
13331 | size_left, ":F%x", | |
13332 | gdb_insn_length (loc->gdbarch, tpaddr)); | |
13333 | ||
13334 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13335 | error ("%s", err_msg); |
3df3a985 | 13336 | } |
35b1e5cc | 13337 | else |
e8ba3115 YQ |
13338 | /* If it passed validation at definition but fails now, |
13339 | something is very wrong. */ | |
f34652de | 13340 | internal_error (_("Fast tracepoint not valid during download")); |
35b1e5cc | 13341 | } |
e8ba3115 YQ |
13342 | else |
13343 | /* Fast tracepoints are functionally identical to regular | |
13344 | tracepoints, so don't take lack of support as a reason to | |
13345 | give up on the trace run. */ | |
13346 | warning (_("Target does not support fast tracepoints, " | |
13347 | "downloading %d as regular tracepoint"), b->number); | |
13348 | } | |
7b572efb TT |
13349 | else if (b->type == bp_static_tracepoint |
13350 | || b->type == bp_static_marker_tracepoint) | |
e8ba3115 YQ |
13351 | { |
13352 | /* Only test for support at download time; we may not know | |
13353 | target capabilities at definition time. */ | |
13354 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 13355 | { |
e8ba3115 | 13356 | struct static_tracepoint_marker marker; |
0fb4aa4b | 13357 | |
e8ba3115 | 13358 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
3df3a985 PFC |
13359 | { |
13360 | size_left = buf.size () - strlen (buf.data ()); | |
13361 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
13362 | size_left, ":S"); | |
13363 | ||
13364 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13365 | error ("%s", err_msg); |
3df3a985 | 13366 | } |
0fb4aa4b | 13367 | else |
e8ba3115 | 13368 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 13369 | } |
e8ba3115 YQ |
13370 | else |
13371 | /* Fast tracepoints are functionally identical to regular | |
13372 | tracepoints, so don't take lack of support as a reason | |
13373 | to give up on the trace run. */ | |
13374 | error (_("Target does not support static tracepoints")); | |
13375 | } | |
13376 | /* If the tracepoint has a conditional, make it into an agent | |
13377 | expression and append to the definition. */ | |
13378 | if (loc->cond) | |
13379 | { | |
13380 | /* Only test support at download time, we may not know target | |
13381 | capabilities at definition time. */ | |
13382 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 13383 | { |
3df3a985 PFC |
13384 | agent_expr_up aexpr = gen_eval_for_expr (tpaddr, |
13385 | loc->cond.get ()); | |
13386 | ||
13387 | size_left = buf.size () - strlen (buf.data ()); | |
13388 | ||
13389 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
6f96f485 | 13390 | size_left, ":X%x,", (int) aexpr->buf.size ()); |
3df3a985 PFC |
13391 | |
13392 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13393 | error ("%s", err_msg); |
3df3a985 PFC |
13394 | |
13395 | size_left = buf.size () - strlen (buf.data ()); | |
13396 | ||
13397 | /* Two bytes to encode each aexpr byte, plus the terminating | |
13398 | null byte. */ | |
6f96f485 | 13399 | if (aexpr->buf.size () * 2 + 1 > size_left) |
a7f25a84 | 13400 | error ("%s", err_msg); |
3df3a985 PFC |
13401 | |
13402 | pkt = buf.data () + strlen (buf.data ()); | |
13403 | ||
6f96f485 | 13404 | for (int ndx = 0; ndx < aexpr->buf.size (); ++ndx) |
e8ba3115 YQ |
13405 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); |
13406 | *pkt = '\0'; | |
35b1e5cc | 13407 | } |
e8ba3115 YQ |
13408 | else |
13409 | warning (_("Target does not support conditional tracepoints, " | |
13410 | "ignoring tp %d cond"), b->number); | |
13411 | } | |
35b1e5cc | 13412 | |
e0700ba4 | 13413 | if (b->commands || !default_collect.empty ()) |
3df3a985 PFC |
13414 | { |
13415 | size_left = buf.size () - strlen (buf.data ()); | |
13416 | ||
13417 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
13418 | size_left, "-"); | |
13419 | ||
13420 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13421 | error ("%s", err_msg); |
3df3a985 PFC |
13422 | } |
13423 | ||
13424 | putpkt (buf.data ()); | |
b6bb3468 | 13425 | remote_get_noisy_reply (); |
8d64371b | 13426 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 | 13427 | error (_("Target does not support tracepoints.")); |
35b1e5cc | 13428 | |
e8ba3115 | 13429 | /* do_single_steps (t); */ |
b44ec619 SM |
13430 | for (auto action_it = tdp_actions.begin (); |
13431 | action_it != tdp_actions.end (); action_it++) | |
e8ba3115 | 13432 | { |
b44ec619 SM |
13433 | QUIT; /* Allow user to bail out with ^C. */ |
13434 | ||
aa6f3694 | 13435 | bool has_more = ((action_it + 1) != tdp_actions.end () |
b44ec619 SM |
13436 | || !stepping_actions.empty ()); |
13437 | ||
3df3a985 PFC |
13438 | ret = snprintf (buf.data (), buf.size (), "QTDP:-%x:%s:%s%c", |
13439 | b->number, addrbuf, /* address */ | |
13440 | action_it->c_str (), | |
13441 | has_more ? '-' : 0); | |
13442 | ||
13443 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13444 | error ("%s", err_msg); |
3df3a985 PFC |
13445 | |
13446 | putpkt (buf.data ()); | |
b44ec619 | 13447 | remote_get_noisy_reply (); |
8d64371b | 13448 | if (strcmp (rs->buf.data (), "OK")) |
b44ec619 | 13449 | error (_("Error on target while setting tracepoints.")); |
e8ba3115 | 13450 | } |
409873ef | 13451 | |
05abfc39 PFC |
13452 | for (auto action_it = stepping_actions.begin (); |
13453 | action_it != stepping_actions.end (); action_it++) | |
13454 | { | |
13455 | QUIT; /* Allow user to bail out with ^C. */ | |
13456 | ||
13457 | bool is_first = action_it == stepping_actions.begin (); | |
aa6f3694 | 13458 | bool has_more = (action_it + 1) != stepping_actions.end (); |
05abfc39 | 13459 | |
3df3a985 PFC |
13460 | ret = snprintf (buf.data (), buf.size (), "QTDP:-%x:%s:%s%s%s", |
13461 | b->number, addrbuf, /* address */ | |
13462 | is_first ? "S" : "", | |
13463 | action_it->c_str (), | |
13464 | has_more ? "-" : ""); | |
13465 | ||
13466 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13467 | error ("%s", err_msg); |
3df3a985 PFC |
13468 | |
13469 | putpkt (buf.data ()); | |
05abfc39 | 13470 | remote_get_noisy_reply (); |
8d64371b | 13471 | if (strcmp (rs->buf.data (), "OK")) |
05abfc39 PFC |
13472 | error (_("Error on target while setting tracepoints.")); |
13473 | } | |
b44ec619 | 13474 | |
ff52c073 | 13475 | if (m_features.packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 | 13476 | { |
264f9890 | 13477 | if (b->locspec != nullptr) |
409873ef | 13478 | { |
3df3a985 PFC |
13479 | ret = snprintf (buf.data (), buf.size (), "QTDPsrc:"); |
13480 | ||
13481 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13482 | error ("%s", err_msg); |
3df3a985 | 13483 | |
709438c7 | 13484 | const char *str = b->locspec->to_string (); |
264f9890 | 13485 | encode_source_string (b->number, loc->address, "at", str, |
3df3a985 PFC |
13486 | buf.data () + strlen (buf.data ()), |
13487 | buf.size () - strlen (buf.data ())); | |
13488 | putpkt (buf.data ()); | |
b6bb3468 | 13489 | remote_get_noisy_reply (); |
8d64371b | 13490 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 | 13491 | warning (_("Target does not support source download.")); |
409873ef | 13492 | } |
e8ba3115 YQ |
13493 | if (b->cond_string) |
13494 | { | |
3df3a985 PFC |
13495 | ret = snprintf (buf.data (), buf.size (), "QTDPsrc:"); |
13496 | ||
13497 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13498 | error ("%s", err_msg); |
3df3a985 | 13499 | |
e8ba3115 | 13500 | encode_source_string (b->number, loc->address, |
6f781ee3 | 13501 | "cond", b->cond_string.get (), |
3df3a985 PFC |
13502 | buf.data () + strlen (buf.data ()), |
13503 | buf.size () - strlen (buf.data ())); | |
13504 | putpkt (buf.data ()); | |
b6bb3468 | 13505 | remote_get_noisy_reply (); |
8d64371b | 13506 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 YQ |
13507 | warning (_("Target does not support source download.")); |
13508 | } | |
13509 | remote_download_command_source (b->number, loc->address, | |
13510 | breakpoint_commands (b)); | |
35b1e5cc | 13511 | } |
35b1e5cc SS |
13512 | } |
13513 | ||
57810aa7 | 13514 | bool |
f6ac5f3d | 13515 | remote_target::can_download_tracepoint () |
1e4d1764 | 13516 | { |
1e51243a PA |
13517 | struct remote_state *rs = get_remote_state (); |
13518 | struct trace_status *ts; | |
13519 | int status; | |
13520 | ||
13521 | /* Don't try to install tracepoints until we've relocated our | |
13522 | symbols, and fetched and merged the target's tracepoint list with | |
13523 | ours. */ | |
13524 | if (rs->starting_up) | |
57810aa7 | 13525 | return false; |
1e51243a PA |
13526 | |
13527 | ts = current_trace_status (); | |
f6ac5f3d | 13528 | status = get_trace_status (ts); |
1e4d1764 YQ |
13529 | |
13530 | if (status == -1 || !ts->running_known || !ts->running) | |
57810aa7 | 13531 | return false; |
1e4d1764 YQ |
13532 | |
13533 | /* If we are in a tracing experiment, but remote stub doesn't support | |
13534 | installing tracepoint in trace, we have to return. */ | |
13535 | if (!remote_supports_install_in_trace ()) | |
57810aa7 | 13536 | return false; |
1e4d1764 | 13537 | |
57810aa7 | 13538 | return true; |
1e4d1764 YQ |
13539 | } |
13540 | ||
13541 | ||
f6ac5f3d PA |
13542 | void |
13543 | remote_target::download_trace_state_variable (const trace_state_variable &tsv) | |
35b1e5cc SS |
13544 | { |
13545 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 13546 | char *p; |
35b1e5cc | 13547 | |
8d64371b | 13548 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTDV:%x:%s:%x:", |
c252925c SM |
13549 | tsv.number, phex ((ULONGEST) tsv.initial_value, 8), |
13550 | tsv.builtin); | |
8d64371b TT |
13551 | p = rs->buf.data () + strlen (rs->buf.data ()); |
13552 | if ((p - rs->buf.data ()) + tsv.name.length () * 2 | |
13553 | >= get_remote_packet_size ()) | |
00bf0b85 | 13554 | error (_("Trace state variable name too long for tsv definition packet")); |
c252925c | 13555 | p += 2 * bin2hex ((gdb_byte *) (tsv.name.data ()), p, tsv.name.length ()); |
00bf0b85 | 13556 | *p++ = '\0'; |
35b1e5cc | 13557 | putpkt (rs->buf); |
b6bb3468 | 13558 | remote_get_noisy_reply (); |
8d64371b | 13559 | if (rs->buf[0] == '\0') |
ad91cd99 | 13560 | error (_("Target does not support this command.")); |
8d64371b | 13561 | if (strcmp (rs->buf.data (), "OK") != 0) |
ad91cd99 | 13562 | error (_("Error on target while downloading trace state variable.")); |
35b1e5cc SS |
13563 | } |
13564 | ||
f6ac5f3d PA |
13565 | void |
13566 | remote_target::enable_tracepoint (struct bp_location *location) | |
d248b706 KY |
13567 | { |
13568 | struct remote_state *rs = get_remote_state (); | |
d248b706 | 13569 | |
8d64371b | 13570 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTEnable:%x:%s", |
53807e9f TT |
13571 | location->owner->number, |
13572 | phex (location->address, sizeof (CORE_ADDR))); | |
d248b706 | 13573 | putpkt (rs->buf); |
b6bb3468 | 13574 | remote_get_noisy_reply (); |
8d64371b | 13575 | if (rs->buf[0] == '\0') |
d248b706 | 13576 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); |
8d64371b | 13577 | if (strcmp (rs->buf.data (), "OK") != 0) |
d248b706 KY |
13578 | error (_("Error on target while enabling tracepoint.")); |
13579 | } | |
13580 | ||
f6ac5f3d PA |
13581 | void |
13582 | remote_target::disable_tracepoint (struct bp_location *location) | |
d248b706 KY |
13583 | { |
13584 | struct remote_state *rs = get_remote_state (); | |
d248b706 | 13585 | |
8d64371b | 13586 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTDisable:%x:%s", |
53807e9f TT |
13587 | location->owner->number, |
13588 | phex (location->address, sizeof (CORE_ADDR))); | |
d248b706 | 13589 | putpkt (rs->buf); |
b6bb3468 | 13590 | remote_get_noisy_reply (); |
8d64371b | 13591 | if (rs->buf[0] == '\0') |
d248b706 | 13592 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); |
8d64371b | 13593 | if (strcmp (rs->buf.data (), "OK") != 0) |
d248b706 KY |
13594 | error (_("Error on target while disabling tracepoint.")); |
13595 | } | |
13596 | ||
f6ac5f3d PA |
13597 | void |
13598 | remote_target::trace_set_readonly_regions () | |
35b1e5cc SS |
13599 | { |
13600 | asection *s; | |
13601 | bfd_size_type size; | |
608bcef2 | 13602 | bfd_vma vma; |
35b1e5cc | 13603 | int anysecs = 0; |
c2fa21f1 | 13604 | int offset = 0; |
f493c217 | 13605 | bfd *abfd = current_program_space->exec_bfd (); |
35b1e5cc | 13606 | |
f493c217 | 13607 | if (!abfd) |
35b1e5cc SS |
13608 | return; /* No information to give. */ |
13609 | ||
b6bb3468 PA |
13610 | struct remote_state *rs = get_remote_state (); |
13611 | ||
8d64371b TT |
13612 | strcpy (rs->buf.data (), "QTro"); |
13613 | offset = strlen (rs->buf.data ()); | |
f493c217 | 13614 | for (s = abfd->sections; s; s = s->next) |
35b1e5cc SS |
13615 | { |
13616 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 13617 | int sec_length; |
35b1e5cc | 13618 | |
f493c217 AM |
13619 | if ((s->flags & SEC_LOAD) == 0 |
13620 | /* || (s->flags & SEC_CODE) == 0 */ | |
13621 | || (s->flags & SEC_READONLY) == 0) | |
35b1e5cc SS |
13622 | continue; |
13623 | ||
13624 | anysecs = 1; | |
fd361982 AM |
13625 | vma = bfd_section_vma (s); |
13626 | size = bfd_section_size (s); | |
f493c217 AM |
13627 | bfd_sprintf_vma (abfd, tmp1, vma); |
13628 | bfd_sprintf_vma (abfd, tmp2, vma + size); | |
c2fa21f1 | 13629 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
8d64371b | 13630 | if (offset + sec_length + 1 > rs->buf.size ()) |
c2fa21f1 | 13631 | { |
ff52c073 CS |
13632 | if (m_features.packet_support (PACKET_qXfer_traceframe_info) |
13633 | != PACKET_ENABLE) | |
864ac8a7 | 13634 | warning (_("\ |
c2fa21f1 HZ |
13635 | Too many sections for read-only sections definition packet.")); |
13636 | break; | |
13637 | } | |
8d64371b | 13638 | xsnprintf (rs->buf.data () + offset, rs->buf.size () - offset, ":%s,%s", |
bba74b36 | 13639 | tmp1, tmp2); |
c2fa21f1 | 13640 | offset += sec_length; |
35b1e5cc SS |
13641 | } |
13642 | if (anysecs) | |
13643 | { | |
b6bb3468 | 13644 | putpkt (rs->buf); |
8d64371b | 13645 | getpkt (&rs->buf, 0); |
35b1e5cc SS |
13646 | } |
13647 | } | |
13648 | ||
f6ac5f3d PA |
13649 | void |
13650 | remote_target::trace_start () | |
35b1e5cc | 13651 | { |
b6bb3468 PA |
13652 | struct remote_state *rs = get_remote_state (); |
13653 | ||
35b1e5cc | 13654 | putpkt ("QTStart"); |
b6bb3468 | 13655 | remote_get_noisy_reply (); |
8d64371b | 13656 | if (rs->buf[0] == '\0') |
ad91cd99 | 13657 | error (_("Target does not support this command.")); |
8d64371b TT |
13658 | if (strcmp (rs->buf.data (), "OK") != 0) |
13659 | error (_("Bogus reply from target: %s"), rs->buf.data ()); | |
35b1e5cc SS |
13660 | } |
13661 | ||
f6ac5f3d PA |
13662 | int |
13663 | remote_target::get_trace_status (struct trace_status *ts) | |
35b1e5cc | 13664 | { |
953b98d1 | 13665 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 13666 | char *p = NULL; |
bd3eecc3 | 13667 | enum packet_result result; |
b6bb3468 | 13668 | struct remote_state *rs = get_remote_state (); |
bd3eecc3 | 13669 | |
ff52c073 | 13670 | if (m_features.packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 13671 | return -1; |
a744cf53 | 13672 | |
7b9a15e1 | 13673 | /* FIXME we need to get register block size some other way. */ |
5cd63fda | 13674 | trace_regblock_size |
9d6eea31 | 13675 | = rs->get_remote_arch_state (target_gdbarch ())->sizeof_g_packet; |
00bf0b85 | 13676 | |
049dc89b JK |
13677 | putpkt ("qTStatus"); |
13678 | ||
a70b8144 | 13679 | try |
67f41397 | 13680 | { |
b6bb3468 | 13681 | p = remote_get_noisy_reply (); |
67f41397 | 13682 | } |
230d2906 | 13683 | catch (const gdb_exception_error &ex) |
67f41397 | 13684 | { |
598d3636 JK |
13685 | if (ex.error != TARGET_CLOSE_ERROR) |
13686 | { | |
13687 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
13688 | return -1; | |
13689 | } | |
eedc3f4f | 13690 | throw; |
67f41397 | 13691 | } |
00bf0b85 | 13692 | |
ff52c073 | 13693 | result = m_features.packet_ok (p, PACKET_qTStatus); |
bd3eecc3 | 13694 | |
00bf0b85 | 13695 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 13696 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 13697 | return -1; |
35b1e5cc | 13698 | |
00bf0b85 | 13699 | /* We're working with a live target. */ |
f5911ea1 | 13700 | ts->filename = NULL; |
00bf0b85 | 13701 | |
00bf0b85 | 13702 | if (*p++ != 'T') |
8d64371b | 13703 | error (_("Bogus trace status reply from target: %s"), rs->buf.data ()); |
35b1e5cc | 13704 | |
84cebc4a YQ |
13705 | /* Function 'parse_trace_status' sets default value of each field of |
13706 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
13707 | parse_trace_status (p, ts); |
13708 | ||
13709 | return ts->running; | |
35b1e5cc SS |
13710 | } |
13711 | ||
f6ac5f3d PA |
13712 | void |
13713 | remote_target::get_tracepoint_status (struct breakpoint *bp, | |
13714 | struct uploaded_tp *utp) | |
f196051f SS |
13715 | { |
13716 | struct remote_state *rs = get_remote_state (); | |
f196051f | 13717 | char *reply; |
f196051f | 13718 | struct tracepoint *tp = (struct tracepoint *) bp; |
bba74b36 | 13719 | size_t size = get_remote_packet_size (); |
f196051f SS |
13720 | |
13721 | if (tp) | |
13722 | { | |
c1fc2657 | 13723 | tp->hit_count = 0; |
f196051f | 13724 | tp->traceframe_usage = 0; |
b00b30b2 | 13725 | for (bp_location &loc : tp->locations ()) |
f196051f SS |
13726 | { |
13727 | /* If the tracepoint was never downloaded, don't go asking for | |
13728 | any status. */ | |
13729 | if (tp->number_on_target == 0) | |
13730 | continue; | |
8d64371b | 13731 | xsnprintf (rs->buf.data (), size, "qTP:%x:%s", tp->number_on_target, |
b00b30b2 | 13732 | phex_nz (loc.address, 0)); |
f196051f | 13733 | putpkt (rs->buf); |
b6bb3468 | 13734 | reply = remote_get_noisy_reply (); |
f196051f SS |
13735 | if (reply && *reply) |
13736 | { | |
13737 | if (*reply == 'V') | |
13738 | parse_tracepoint_status (reply + 1, bp, utp); | |
13739 | } | |
13740 | } | |
13741 | } | |
13742 | else if (utp) | |
13743 | { | |
13744 | utp->hit_count = 0; | |
13745 | utp->traceframe_usage = 0; | |
8d64371b | 13746 | xsnprintf (rs->buf.data (), size, "qTP:%x:%s", utp->number, |
bba74b36 | 13747 | phex_nz (utp->addr, 0)); |
f196051f | 13748 | putpkt (rs->buf); |
b6bb3468 | 13749 | reply = remote_get_noisy_reply (); |
f196051f SS |
13750 | if (reply && *reply) |
13751 | { | |
13752 | if (*reply == 'V') | |
13753 | parse_tracepoint_status (reply + 1, bp, utp); | |
13754 | } | |
13755 | } | |
13756 | } | |
13757 | ||
f6ac5f3d PA |
13758 | void |
13759 | remote_target::trace_stop () | |
35b1e5cc | 13760 | { |
b6bb3468 PA |
13761 | struct remote_state *rs = get_remote_state (); |
13762 | ||
35b1e5cc | 13763 | putpkt ("QTStop"); |
b6bb3468 | 13764 | remote_get_noisy_reply (); |
8d64371b | 13765 | if (rs->buf[0] == '\0') |
ad91cd99 | 13766 | error (_("Target does not support this command.")); |
8d64371b TT |
13767 | if (strcmp (rs->buf.data (), "OK") != 0) |
13768 | error (_("Bogus reply from target: %s"), rs->buf.data ()); | |
35b1e5cc SS |
13769 | } |
13770 | ||
f6ac5f3d PA |
13771 | int |
13772 | remote_target::trace_find (enum trace_find_type type, int num, | |
13773 | CORE_ADDR addr1, CORE_ADDR addr2, | |
13774 | int *tpp) | |
35b1e5cc SS |
13775 | { |
13776 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 13777 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
35b1e5cc SS |
13778 | char *p, *reply; |
13779 | int target_frameno = -1, target_tracept = -1; | |
13780 | ||
e6e4e701 PA |
13781 | /* Lookups other than by absolute frame number depend on the current |
13782 | trace selected, so make sure it is correct on the remote end | |
13783 | first. */ | |
13784 | if (type != tfind_number) | |
13785 | set_remote_traceframe (); | |
13786 | ||
8d64371b | 13787 | p = rs->buf.data (); |
35b1e5cc SS |
13788 | strcpy (p, "QTFrame:"); |
13789 | p = strchr (p, '\0'); | |
13790 | switch (type) | |
13791 | { | |
13792 | case tfind_number: | |
bba74b36 | 13793 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
13794 | break; |
13795 | case tfind_pc: | |
bba74b36 | 13796 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
13797 | break; |
13798 | case tfind_tp: | |
bba74b36 | 13799 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
13800 | break; |
13801 | case tfind_range: | |
bba74b36 YQ |
13802 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
13803 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13804 | break; |
13805 | case tfind_outside: | |
bba74b36 YQ |
13806 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
13807 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13808 | break; |
13809 | default: | |
9b20d036 | 13810 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
13811 | } |
13812 | ||
13813 | putpkt (rs->buf); | |
b6bb3468 | 13814 | reply = remote_get_noisy_reply (); |
ad91cd99 PA |
13815 | if (*reply == '\0') |
13816 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
13817 | |
13818 | while (reply && *reply) | |
13819 | switch (*reply) | |
13820 | { | |
13821 | case 'F': | |
f197e0f1 VP |
13822 | p = ++reply; |
13823 | target_frameno = (int) strtol (p, &reply, 16); | |
13824 | if (reply == p) | |
13825 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
13826 | /* Don't update our remote traceframe number cache on failure |
13827 | to select a remote traceframe. */ | |
f197e0f1 VP |
13828 | if (target_frameno == -1) |
13829 | return -1; | |
35b1e5cc SS |
13830 | break; |
13831 | case 'T': | |
f197e0f1 VP |
13832 | p = ++reply; |
13833 | target_tracept = (int) strtol (p, &reply, 16); | |
13834 | if (reply == p) | |
13835 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
13836 | break; |
13837 | case 'O': /* "OK"? */ | |
13838 | if (reply[1] == 'K' && reply[2] == '\0') | |
13839 | reply += 2; | |
13840 | else | |
13841 | error (_("Bogus reply from target: %s"), reply); | |
13842 | break; | |
13843 | default: | |
13844 | error (_("Bogus reply from target: %s"), reply); | |
13845 | } | |
13846 | if (tpp) | |
13847 | *tpp = target_tracept; | |
e6e4e701 | 13848 | |
262e1174 | 13849 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
13850 | return target_frameno; |
13851 | } | |
13852 | ||
57810aa7 | 13853 | bool |
f6ac5f3d | 13854 | remote_target::get_trace_state_variable_value (int tsvnum, LONGEST *val) |
35b1e5cc SS |
13855 | { |
13856 | struct remote_state *rs = get_remote_state (); | |
13857 | char *reply; | |
13858 | ULONGEST uval; | |
13859 | ||
e6e4e701 PA |
13860 | set_remote_traceframe (); |
13861 | ||
8d64371b | 13862 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc | 13863 | putpkt (rs->buf); |
b6bb3468 | 13864 | reply = remote_get_noisy_reply (); |
35b1e5cc SS |
13865 | if (reply && *reply) |
13866 | { | |
13867 | if (*reply == 'V') | |
13868 | { | |
13869 | unpack_varlen_hex (reply + 1, &uval); | |
13870 | *val = (LONGEST) uval; | |
57810aa7 | 13871 | return true; |
35b1e5cc SS |
13872 | } |
13873 | } | |
57810aa7 | 13874 | return false; |
35b1e5cc SS |
13875 | } |
13876 | ||
f6ac5f3d PA |
13877 | int |
13878 | remote_target::save_trace_data (const char *filename) | |
00bf0b85 SS |
13879 | { |
13880 | struct remote_state *rs = get_remote_state (); | |
13881 | char *p, *reply; | |
13882 | ||
8d64371b | 13883 | p = rs->buf.data (); |
00bf0b85 SS |
13884 | strcpy (p, "QTSave:"); |
13885 | p += strlen (p); | |
8d64371b TT |
13886 | if ((p - rs->buf.data ()) + strlen (filename) * 2 |
13887 | >= get_remote_packet_size ()) | |
00bf0b85 | 13888 | error (_("Remote file name too long for trace save packet")); |
9f1b45b0 | 13889 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
13890 | *p++ = '\0'; |
13891 | putpkt (rs->buf); | |
b6bb3468 | 13892 | reply = remote_get_noisy_reply (); |
d6c5869f | 13893 | if (*reply == '\0') |
ad91cd99 PA |
13894 | error (_("Target does not support this command.")); |
13895 | if (strcmp (reply, "OK") != 0) | |
13896 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
13897 | return 0; |
13898 | } | |
13899 | ||
13900 | /* This is basically a memory transfer, but needs to be its own packet | |
13901 | because we don't know how the target actually organizes its trace | |
13902 | memory, plus we want to be able to ask for as much as possible, but | |
13903 | not be unhappy if we don't get as much as we ask for. */ | |
13904 | ||
f6ac5f3d PA |
13905 | LONGEST |
13906 | remote_target::get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
13907 | { |
13908 | struct remote_state *rs = get_remote_state (); | |
13909 | char *reply; | |
13910 | char *p; | |
13911 | int rslt; | |
13912 | ||
8d64371b | 13913 | p = rs->buf.data (); |
00bf0b85 SS |
13914 | strcpy (p, "qTBuffer:"); |
13915 | p += strlen (p); | |
13916 | p += hexnumstr (p, offset); | |
13917 | *p++ = ','; | |
13918 | p += hexnumstr (p, len); | |
13919 | *p++ = '\0'; | |
13920 | ||
13921 | putpkt (rs->buf); | |
b6bb3468 | 13922 | reply = remote_get_noisy_reply (); |
00bf0b85 SS |
13923 | if (reply && *reply) |
13924 | { | |
13925 | /* 'l' by itself means we're at the end of the buffer and | |
13926 | there is nothing more to get. */ | |
13927 | if (*reply == 'l') | |
13928 | return 0; | |
13929 | ||
13930 | /* Convert the reply into binary. Limit the number of bytes to | |
13931 | convert according to our passed-in buffer size, rather than | |
13932 | what was returned in the packet; if the target is | |
13933 | unexpectedly generous and gives us a bigger reply than we | |
13934 | asked for, we don't want to crash. */ | |
b6bb3468 | 13935 | rslt = hex2bin (reply, buf, len); |
00bf0b85 SS |
13936 | return rslt; |
13937 | } | |
13938 | ||
13939 | /* Something went wrong, flag as an error. */ | |
13940 | return -1; | |
13941 | } | |
13942 | ||
f6ac5f3d PA |
13943 | void |
13944 | remote_target::set_disconnected_tracing (int val) | |
35b1e5cc SS |
13945 | { |
13946 | struct remote_state *rs = get_remote_state (); | |
13947 | ||
ff52c073 CS |
13948 | if (m_features.packet_support (PACKET_DisconnectedTracing_feature) |
13949 | == PACKET_ENABLE) | |
33da3f1c | 13950 | { |
ad91cd99 PA |
13951 | char *reply; |
13952 | ||
8d64371b TT |
13953 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
13954 | "QTDisconnected:%x", val); | |
33da3f1c | 13955 | putpkt (rs->buf); |
b6bb3468 | 13956 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13957 | if (*reply == '\0') |
33da3f1c | 13958 | error (_("Target does not support this command.")); |
ad91cd99 | 13959 | if (strcmp (reply, "OK") != 0) |
dda83cd7 | 13960 | error (_("Bogus reply from target: %s"), reply); |
33da3f1c SS |
13961 | } |
13962 | else if (val) | |
13963 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
13964 | } |
13965 | ||
f6ac5f3d PA |
13966 | int |
13967 | remote_target::core_of_thread (ptid_t ptid) | |
dc146f7c | 13968 | { |
9213a6d7 | 13969 | thread_info *info = this->find_thread (ptid); |
a744cf53 | 13970 | |
7aabaf9d SM |
13971 | if (info != NULL && info->priv != NULL) |
13972 | return get_remote_thread_info (info)->core; | |
13973 | ||
dc146f7c VP |
13974 | return -1; |
13975 | } | |
13976 | ||
f6ac5f3d PA |
13977 | void |
13978 | remote_target::set_circular_trace_buffer (int val) | |
4daf5ac0 SS |
13979 | { |
13980 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 13981 | char *reply; |
4daf5ac0 | 13982 | |
8d64371b TT |
13983 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
13984 | "QTBuffer:circular:%x", val); | |
4daf5ac0 | 13985 | putpkt (rs->buf); |
b6bb3468 | 13986 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13987 | if (*reply == '\0') |
4daf5ac0 | 13988 | error (_("Target does not support this command.")); |
ad91cd99 PA |
13989 | if (strcmp (reply, "OK") != 0) |
13990 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
13991 | } |
13992 | ||
f6ac5f3d PA |
13993 | traceframe_info_up |
13994 | remote_target::traceframe_info () | |
b3b9301e | 13995 | { |
9018be22 | 13996 | gdb::optional<gdb::char_vector> text |
328d42d8 SM |
13997 | = target_read_stralloc (current_inferior ()->top_target (), |
13998 | TARGET_OBJECT_TRACEFRAME_INFO, | |
b7b030ad | 13999 | NULL); |
9018be22 SM |
14000 | if (text) |
14001 | return parse_traceframe_info (text->data ()); | |
b3b9301e PA |
14002 | |
14003 | return NULL; | |
14004 | } | |
14005 | ||
405f8e94 SS |
14006 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
14007 | instruction on which a fast tracepoint may be placed. Returns -1 | |
14008 | if the packet is not supported, and 0 if the minimum instruction | |
14009 | length is unknown. */ | |
14010 | ||
f6ac5f3d PA |
14011 | int |
14012 | remote_target::get_min_fast_tracepoint_insn_len () | |
405f8e94 SS |
14013 | { |
14014 | struct remote_state *rs = get_remote_state (); | |
14015 | char *reply; | |
14016 | ||
e886a173 PA |
14017 | /* If we're not debugging a process yet, the IPA can't be |
14018 | loaded. */ | |
55f6301a | 14019 | if (!target_has_execution ()) |
e886a173 PA |
14020 | return 0; |
14021 | ||
14022 | /* Make sure the remote is pointing at the right process. */ | |
14023 | set_general_process (); | |
14024 | ||
8d64371b | 14025 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 | 14026 | putpkt (rs->buf); |
b6bb3468 | 14027 | reply = remote_get_noisy_reply (); |
405f8e94 SS |
14028 | if (*reply == '\0') |
14029 | return -1; | |
14030 | else | |
14031 | { | |
14032 | ULONGEST min_insn_len; | |
14033 | ||
14034 | unpack_varlen_hex (reply, &min_insn_len); | |
14035 | ||
14036 | return (int) min_insn_len; | |
14037 | } | |
14038 | } | |
14039 | ||
f6ac5f3d PA |
14040 | void |
14041 | remote_target::set_trace_buffer_size (LONGEST val) | |
f6f899bf | 14042 | { |
ff52c073 | 14043 | if (m_features.packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
14044 | { |
14045 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
14046 | char *buf = rs->buf.data (); |
14047 | char *endbuf = buf + get_remote_packet_size (); | |
f6f899bf HAQ |
14048 | enum packet_result result; |
14049 | ||
14050 | gdb_assert (val >= 0 || val == -1); | |
14051 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
14052 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
14053 | if (val < 0) | |
14054 | { | |
14055 | *buf++ = '-'; | |
dda83cd7 | 14056 | buf += hexnumstr (buf, (ULONGEST) -val); |
f6f899bf HAQ |
14057 | } |
14058 | else | |
14059 | buf += hexnumstr (buf, (ULONGEST) val); | |
14060 | ||
14061 | putpkt (rs->buf); | |
b6bb3468 | 14062 | remote_get_noisy_reply (); |
ff52c073 | 14063 | result = m_features.packet_ok (rs->buf, PACKET_QTBuffer_size); |
f6f899bf HAQ |
14064 | |
14065 | if (result != PACKET_OK) | |
8d64371b | 14066 | warning (_("Bogus reply from target: %s"), rs->buf.data ()); |
f6f899bf HAQ |
14067 | } |
14068 | } | |
14069 | ||
57810aa7 | 14070 | bool |
f6ac5f3d PA |
14071 | remote_target::set_trace_notes (const char *user, const char *notes, |
14072 | const char *stop_notes) | |
f196051f SS |
14073 | { |
14074 | struct remote_state *rs = get_remote_state (); | |
14075 | char *reply; | |
8d64371b TT |
14076 | char *buf = rs->buf.data (); |
14077 | char *endbuf = buf + get_remote_packet_size (); | |
f196051f SS |
14078 | int nbytes; |
14079 | ||
14080 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
14081 | if (user) | |
14082 | { | |
14083 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 14084 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
14085 | buf += 2 * nbytes; |
14086 | *buf++ = ';'; | |
14087 | } | |
14088 | if (notes) | |
14089 | { | |
14090 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 14091 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
14092 | buf += 2 * nbytes; |
14093 | *buf++ = ';'; | |
14094 | } | |
14095 | if (stop_notes) | |
14096 | { | |
14097 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 14098 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
14099 | buf += 2 * nbytes; |
14100 | *buf++ = ';'; | |
14101 | } | |
14102 | /* Ensure the buffer is terminated. */ | |
14103 | *buf = '\0'; | |
14104 | ||
14105 | putpkt (rs->buf); | |
b6bb3468 | 14106 | reply = remote_get_noisy_reply (); |
f196051f | 14107 | if (*reply == '\0') |
57810aa7 | 14108 | return false; |
f196051f SS |
14109 | |
14110 | if (strcmp (reply, "OK") != 0) | |
14111 | error (_("Bogus reply from target: %s"), reply); | |
14112 | ||
57810aa7 | 14113 | return true; |
f196051f SS |
14114 | } |
14115 | ||
57810aa7 PA |
14116 | bool |
14117 | remote_target::use_agent (bool use) | |
d1feda86 | 14118 | { |
ff52c073 | 14119 | if (m_features.packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
14120 | { |
14121 | struct remote_state *rs = get_remote_state (); | |
14122 | ||
14123 | /* If the stub supports QAgent. */ | |
8d64371b | 14124 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 | 14125 | putpkt (rs->buf); |
8d64371b | 14126 | getpkt (&rs->buf, 0); |
d1feda86 | 14127 | |
8d64371b | 14128 | if (strcmp (rs->buf.data (), "OK") == 0) |
d1feda86 | 14129 | { |
f6ac5f3d | 14130 | ::use_agent = use; |
57810aa7 | 14131 | return true; |
d1feda86 YQ |
14132 | } |
14133 | } | |
14134 | ||
57810aa7 | 14135 | return false; |
d1feda86 YQ |
14136 | } |
14137 | ||
57810aa7 | 14138 | bool |
f6ac5f3d | 14139 | remote_target::can_use_agent () |
d1feda86 | 14140 | { |
ff52c073 | 14141 | return (m_features.packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
14142 | } |
14143 | ||
9accd112 MM |
14144 | struct btrace_target_info |
14145 | { | |
14146 | /* The ptid of the traced thread. */ | |
14147 | ptid_t ptid; | |
f4abbc16 MM |
14148 | |
14149 | /* The obtained branch trace configuration. */ | |
14150 | struct btrace_config conf; | |
9accd112 MM |
14151 | }; |
14152 | ||
f4abbc16 MM |
14153 | /* Reset our idea of our target's btrace configuration. */ |
14154 | ||
14155 | static void | |
6b8edb51 | 14156 | remote_btrace_reset (remote_state *rs) |
f4abbc16 | 14157 | { |
f4abbc16 MM |
14158 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); |
14159 | } | |
14160 | ||
f4abbc16 MM |
14161 | /* Synchronize the configuration with the target. */ |
14162 | ||
6b8edb51 PA |
14163 | void |
14164 | remote_target::btrace_sync_conf (const btrace_config *conf) | |
f4abbc16 | 14165 | { |
d33501a5 MM |
14166 | struct remote_state *rs; |
14167 | char *buf, *pos, *endbuf; | |
14168 | ||
14169 | rs = get_remote_state (); | |
8d64371b | 14170 | buf = rs->buf.data (); |
d33501a5 MM |
14171 | endbuf = buf + get_remote_packet_size (); |
14172 | ||
ff52c073 | 14173 | if (m_features.packet_support (PACKET_Qbtrace_conf_bts_size) == PACKET_ENABLE |
d33501a5 MM |
14174 | && conf->bts.size != rs->btrace_config.bts.size) |
14175 | { | |
14176 | pos = buf; | |
ff52c073 CS |
14177 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", |
14178 | packets_descriptions[PACKET_Qbtrace_conf_bts_size].name, | |
dda83cd7 | 14179 | conf->bts.size); |
d33501a5 MM |
14180 | |
14181 | putpkt (buf); | |
8d64371b | 14182 | getpkt (&rs->buf, 0); |
d33501a5 | 14183 | |
ff52c073 CS |
14184 | if (m_features.packet_ok (buf, PACKET_Qbtrace_conf_bts_size) |
14185 | == PACKET_ERROR) | |
d33501a5 MM |
14186 | { |
14187 | if (buf[0] == 'E' && buf[1] == '.') | |
14188 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
14189 | else | |
14190 | error (_("Failed to configure the BTS buffer size.")); | |
14191 | } | |
14192 | ||
14193 | rs->btrace_config.bts.size = conf->bts.size; | |
14194 | } | |
b20a6524 | 14195 | |
ff52c073 | 14196 | if (m_features.packet_support (PACKET_Qbtrace_conf_pt_size) == PACKET_ENABLE |
b20a6524 MM |
14197 | && conf->pt.size != rs->btrace_config.pt.size) |
14198 | { | |
14199 | pos = buf; | |
ff52c073 CS |
14200 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", |
14201 | packets_descriptions[PACKET_Qbtrace_conf_pt_size].name, | |
dda83cd7 | 14202 | conf->pt.size); |
b20a6524 MM |
14203 | |
14204 | putpkt (buf); | |
8d64371b | 14205 | getpkt (&rs->buf, 0); |
b20a6524 | 14206 | |
ff52c073 CS |
14207 | if (m_features.packet_ok (buf, PACKET_Qbtrace_conf_pt_size) |
14208 | == PACKET_ERROR) | |
b20a6524 MM |
14209 | { |
14210 | if (buf[0] == 'E' && buf[1] == '.') | |
14211 | error (_("Failed to configure the trace buffer size: %s"), buf + 2); | |
14212 | else | |
14213 | error (_("Failed to configure the trace buffer size.")); | |
14214 | } | |
14215 | ||
14216 | rs->btrace_config.pt.size = conf->pt.size; | |
14217 | } | |
f4abbc16 MM |
14218 | } |
14219 | ||
0d8cbc5f | 14220 | /* Read TP's btrace configuration from the target and store it into CONF. */ |
f4abbc16 MM |
14221 | |
14222 | static void | |
0d8cbc5f | 14223 | btrace_read_config (thread_info *tp, struct btrace_config *conf) |
f4abbc16 | 14224 | { |
0d8cbc5f MM |
14225 | /* target_read_stralloc relies on INFERIOR_PTID. */ |
14226 | scoped_restore_current_thread restore_thread; | |
14227 | switch_to_thread (tp); | |
14228 | ||
9018be22 | 14229 | gdb::optional<gdb::char_vector> xml |
328d42d8 SM |
14230 | = target_read_stralloc (current_inferior ()->top_target (), |
14231 | TARGET_OBJECT_BTRACE_CONF, ""); | |
9018be22 SM |
14232 | if (xml) |
14233 | parse_xml_btrace_conf (conf, xml->data ()); | |
f4abbc16 MM |
14234 | } |
14235 | ||
c0272db5 TW |
14236 | /* Maybe reopen target btrace. */ |
14237 | ||
6b8edb51 PA |
14238 | void |
14239 | remote_target::remote_btrace_maybe_reopen () | |
c0272db5 TW |
14240 | { |
14241 | struct remote_state *rs = get_remote_state (); | |
c0272db5 | 14242 | int btrace_target_pushed = 0; |
15766370 | 14243 | #if !defined (HAVE_LIBIPT) |
c0272db5 | 14244 | int warned = 0; |
15766370 | 14245 | #endif |
c0272db5 | 14246 | |
aedbe3bb CM |
14247 | /* Don't bother walking the entirety of the remote thread list when |
14248 | we know the feature isn't supported by the remote. */ | |
ff52c073 | 14249 | if (m_features.packet_support (PACKET_qXfer_btrace_conf) != PACKET_ENABLE) |
aedbe3bb CM |
14250 | return; |
14251 | ||
5b6d1e4f | 14252 | for (thread_info *tp : all_non_exited_threads (this)) |
c0272db5 | 14253 | { |
c0272db5 | 14254 | memset (&rs->btrace_config, 0x00, sizeof (struct btrace_config)); |
0d8cbc5f | 14255 | btrace_read_config (tp, &rs->btrace_config); |
c0272db5 TW |
14256 | |
14257 | if (rs->btrace_config.format == BTRACE_FORMAT_NONE) | |
14258 | continue; | |
14259 | ||
14260 | #if !defined (HAVE_LIBIPT) | |
14261 | if (rs->btrace_config.format == BTRACE_FORMAT_PT) | |
14262 | { | |
14263 | if (!warned) | |
14264 | { | |
14265 | warned = 1; | |
c4e12631 MM |
14266 | warning (_("Target is recording using Intel Processor Trace " |
14267 | "but support was disabled at compile time.")); | |
c0272db5 TW |
14268 | } |
14269 | ||
14270 | continue; | |
14271 | } | |
14272 | #endif /* !defined (HAVE_LIBIPT) */ | |
14273 | ||
14274 | /* Push target, once, but before anything else happens. This way our | |
14275 | changes to the threads will be cleaned up by unpushing the target | |
14276 | in case btrace_read_config () throws. */ | |
14277 | if (!btrace_target_pushed) | |
14278 | { | |
14279 | btrace_target_pushed = 1; | |
14280 | record_btrace_push_target (); | |
6cb06a8c TT |
14281 | gdb_printf (_("Target is recording using %s.\n"), |
14282 | btrace_format_string (rs->btrace_config.format)); | |
c0272db5 TW |
14283 | } |
14284 | ||
14285 | tp->btrace.target = XCNEW (struct btrace_target_info); | |
14286 | tp->btrace.target->ptid = tp->ptid; | |
14287 | tp->btrace.target->conf = rs->btrace_config; | |
14288 | } | |
c0272db5 TW |
14289 | } |
14290 | ||
9accd112 MM |
14291 | /* Enable branch tracing. */ |
14292 | ||
f6ac5f3d | 14293 | struct btrace_target_info * |
696c0d5e MM |
14294 | remote_target::enable_btrace (thread_info *tp, |
14295 | const struct btrace_config *conf) | |
9accd112 MM |
14296 | { |
14297 | struct btrace_target_info *tinfo = NULL; | |
b20a6524 | 14298 | struct packet_config *packet = NULL; |
9accd112 | 14299 | struct remote_state *rs = get_remote_state (); |
8d64371b TT |
14300 | char *buf = rs->buf.data (); |
14301 | char *endbuf = buf + get_remote_packet_size (); | |
9accd112 | 14302 | |
ff52c073 | 14303 | unsigned int which_packet; |
b20a6524 MM |
14304 | switch (conf->format) |
14305 | { | |
14306 | case BTRACE_FORMAT_BTS: | |
ff52c073 | 14307 | which_packet = PACKET_Qbtrace_bts; |
b20a6524 | 14308 | break; |
b20a6524 | 14309 | case BTRACE_FORMAT_PT: |
ff52c073 | 14310 | which_packet = PACKET_Qbtrace_pt; |
b20a6524 | 14311 | break; |
ff52c073 CS |
14312 | default: |
14313 | internal_error (_("Bad branch btrace format: %u."), | |
14314 | (unsigned int) conf->format); | |
b20a6524 MM |
14315 | } |
14316 | ||
ff52c073 | 14317 | packet = &m_features.m_protocol_packets[which_packet]; |
b20a6524 | 14318 | if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
14319 | error (_("Target does not support branch tracing.")); |
14320 | ||
f4abbc16 MM |
14321 | btrace_sync_conf (conf); |
14322 | ||
696c0d5e | 14323 | ptid_t ptid = tp->ptid; |
9accd112 MM |
14324 | set_general_thread (ptid); |
14325 | ||
ff52c073 CS |
14326 | buf += xsnprintf (buf, endbuf - buf, "%s", |
14327 | packets_descriptions[which_packet].name); | |
9accd112 | 14328 | putpkt (rs->buf); |
8d64371b | 14329 | getpkt (&rs->buf, 0); |
9accd112 | 14330 | |
ff52c073 | 14331 | if (m_features.packet_ok (rs->buf, which_packet) == PACKET_ERROR) |
9accd112 MM |
14332 | { |
14333 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
14334 | error (_("Could not enable branch tracing for %s: %s"), | |
a068643d | 14335 | target_pid_to_str (ptid).c_str (), &rs->buf[2]); |
9accd112 MM |
14336 | else |
14337 | error (_("Could not enable branch tracing for %s."), | |
a068643d | 14338 | target_pid_to_str (ptid).c_str ()); |
9accd112 MM |
14339 | } |
14340 | ||
8d749320 | 14341 | tinfo = XCNEW (struct btrace_target_info); |
9accd112 MM |
14342 | tinfo->ptid = ptid; |
14343 | ||
f4abbc16 MM |
14344 | /* If we fail to read the configuration, we lose some information, but the |
14345 | tracing itself is not impacted. */ | |
a70b8144 | 14346 | try |
492d29ea | 14347 | { |
0d8cbc5f | 14348 | btrace_read_config (tp, &tinfo->conf); |
492d29ea | 14349 | } |
230d2906 | 14350 | catch (const gdb_exception_error &err) |
492d29ea PA |
14351 | { |
14352 | if (err.message != NULL) | |
3d6e9d23 | 14353 | warning ("%s", err.what ()); |
492d29ea | 14354 | } |
f4abbc16 | 14355 | |
9accd112 MM |
14356 | return tinfo; |
14357 | } | |
14358 | ||
14359 | /* Disable branch tracing. */ | |
14360 | ||
f6ac5f3d PA |
14361 | void |
14362 | remote_target::disable_btrace (struct btrace_target_info *tinfo) | |
9accd112 | 14363 | { |
9accd112 | 14364 | struct remote_state *rs = get_remote_state (); |
8d64371b TT |
14365 | char *buf = rs->buf.data (); |
14366 | char *endbuf = buf + get_remote_packet_size (); | |
9accd112 | 14367 | |
ff52c073 | 14368 | if (m_features.packet_support (PACKET_Qbtrace_off) != PACKET_ENABLE) |
9accd112 MM |
14369 | error (_("Target does not support branch tracing.")); |
14370 | ||
14371 | set_general_thread (tinfo->ptid); | |
14372 | ||
ff52c073 CS |
14373 | buf += xsnprintf (buf, endbuf - buf, "%s", |
14374 | packets_descriptions[PACKET_Qbtrace_off].name); | |
9accd112 | 14375 | putpkt (rs->buf); |
8d64371b | 14376 | getpkt (&rs->buf, 0); |
9accd112 | 14377 | |
ff52c073 | 14378 | if (m_features.packet_ok (rs->buf, PACKET_Qbtrace_off) == PACKET_ERROR) |
9accd112 MM |
14379 | { |
14380 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
14381 | error (_("Could not disable branch tracing for %s: %s"), | |
a068643d | 14382 | target_pid_to_str (tinfo->ptid).c_str (), &rs->buf[2]); |
9accd112 MM |
14383 | else |
14384 | error (_("Could not disable branch tracing for %s."), | |
a068643d | 14385 | target_pid_to_str (tinfo->ptid).c_str ()); |
9accd112 MM |
14386 | } |
14387 | ||
14388 | xfree (tinfo); | |
14389 | } | |
14390 | ||
14391 | /* Teardown branch tracing. */ | |
14392 | ||
f6ac5f3d PA |
14393 | void |
14394 | remote_target::teardown_btrace (struct btrace_target_info *tinfo) | |
9accd112 MM |
14395 | { |
14396 | /* We must not talk to the target during teardown. */ | |
14397 | xfree (tinfo); | |
14398 | } | |
14399 | ||
14400 | /* Read the branch trace. */ | |
14401 | ||
f6ac5f3d PA |
14402 | enum btrace_error |
14403 | remote_target::read_btrace (struct btrace_data *btrace, | |
14404 | struct btrace_target_info *tinfo, | |
14405 | enum btrace_read_type type) | |
9accd112 | 14406 | { |
9accd112 | 14407 | const char *annex; |
9accd112 | 14408 | |
ff52c073 | 14409 | if (m_features.packet_support (PACKET_qXfer_btrace) != PACKET_ENABLE) |
9accd112 MM |
14410 | error (_("Target does not support branch tracing.")); |
14411 | ||
14412 | #if !defined(HAVE_LIBEXPAT) | |
14413 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
14414 | #endif | |
14415 | ||
14416 | switch (type) | |
14417 | { | |
864089d2 | 14418 | case BTRACE_READ_ALL: |
9accd112 MM |
14419 | annex = "all"; |
14420 | break; | |
864089d2 | 14421 | case BTRACE_READ_NEW: |
9accd112 MM |
14422 | annex = "new"; |
14423 | break; | |
969c39fb MM |
14424 | case BTRACE_READ_DELTA: |
14425 | annex = "delta"; | |
14426 | break; | |
9accd112 | 14427 | default: |
f34652de | 14428 | internal_error (_("Bad branch tracing read type: %u."), |
9accd112 MM |
14429 | (unsigned int) type); |
14430 | } | |
14431 | ||
9018be22 | 14432 | gdb::optional<gdb::char_vector> xml |
328d42d8 SM |
14433 | = target_read_stralloc (current_inferior ()->top_target (), |
14434 | TARGET_OBJECT_BTRACE, annex); | |
9018be22 | 14435 | if (!xml) |
969c39fb | 14436 | return BTRACE_ERR_UNKNOWN; |
9accd112 | 14437 | |
9018be22 | 14438 | parse_xml_btrace (btrace, xml->data ()); |
9accd112 | 14439 | |
969c39fb | 14440 | return BTRACE_ERR_NONE; |
9accd112 MM |
14441 | } |
14442 | ||
f6ac5f3d PA |
14443 | const struct btrace_config * |
14444 | remote_target::btrace_conf (const struct btrace_target_info *tinfo) | |
f4abbc16 MM |
14445 | { |
14446 | return &tinfo->conf; | |
14447 | } | |
14448 | ||
57810aa7 | 14449 | bool |
f6ac5f3d | 14450 | remote_target::augmented_libraries_svr4_read () |
ced63ec0 | 14451 | { |
ff52c073 CS |
14452 | return |
14453 | (m_features.packet_support (PACKET_augmented_libraries_svr4_read_feature) | |
14454 | == PACKET_ENABLE); | |
ced63ec0 GB |
14455 | } |
14456 | ||
9dd130a0 TT |
14457 | /* Implementation of to_load. */ |
14458 | ||
f6ac5f3d PA |
14459 | void |
14460 | remote_target::load (const char *name, int from_tty) | |
9dd130a0 TT |
14461 | { |
14462 | generic_load (name, from_tty); | |
14463 | } | |
14464 | ||
c78fa86a GB |
14465 | /* Accepts an integer PID; returns a string representing a file that |
14466 | can be opened on the remote side to get the symbols for the child | |
14467 | process. Returns NULL if the operation is not supported. */ | |
14468 | ||
0e90c441 | 14469 | const char * |
f6ac5f3d | 14470 | remote_target::pid_to_exec_file (int pid) |
c78fa86a | 14471 | { |
9018be22 | 14472 | static gdb::optional<gdb::char_vector> filename; |
835205d0 | 14473 | char *annex = NULL; |
c78fa86a | 14474 | |
ff52c073 | 14475 | if (m_features.packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) |
c78fa86a GB |
14476 | return NULL; |
14477 | ||
5b6d1e4f | 14478 | inferior *inf = find_inferior_pid (this, pid); |
835205d0 | 14479 | if (inf == NULL) |
f34652de | 14480 | internal_error (_("not currently attached to process %d"), pid); |
835205d0 GB |
14481 | |
14482 | if (!inf->fake_pid_p) | |
14483 | { | |
14484 | const int annex_size = 9; | |
14485 | ||
224c3ddb | 14486 | annex = (char *) alloca (annex_size); |
835205d0 GB |
14487 | xsnprintf (annex, annex_size, "%x", pid); |
14488 | } | |
14489 | ||
328d42d8 | 14490 | filename = target_read_stralloc (current_inferior ()->top_target (), |
c78fa86a GB |
14491 | TARGET_OBJECT_EXEC_FILE, annex); |
14492 | ||
9018be22 | 14493 | return filename ? filename->data () : nullptr; |
c78fa86a GB |
14494 | } |
14495 | ||
750ce8d1 YQ |
14496 | /* Implement the to_can_do_single_step target_ops method. */ |
14497 | ||
f6ac5f3d PA |
14498 | int |
14499 | remote_target::can_do_single_step () | |
750ce8d1 YQ |
14500 | { |
14501 | /* We can only tell whether target supports single step or not by | |
14502 | supported s and S vCont actions if the stub supports vContSupported | |
14503 | feature. If the stub doesn't support vContSupported feature, | |
14504 | we have conservatively to think target doesn't supports single | |
14505 | step. */ | |
ff52c073 | 14506 | if (m_features.packet_support (PACKET_vContSupported) == PACKET_ENABLE) |
750ce8d1 YQ |
14507 | { |
14508 | struct remote_state *rs = get_remote_state (); | |
14509 | ||
750ce8d1 YQ |
14510 | return rs->supports_vCont.s && rs->supports_vCont.S; |
14511 | } | |
14512 | else | |
14513 | return 0; | |
14514 | } | |
14515 | ||
3a00c802 PA |
14516 | /* Implementation of the to_execution_direction method for the remote |
14517 | target. */ | |
14518 | ||
f6ac5f3d PA |
14519 | enum exec_direction_kind |
14520 | remote_target::execution_direction () | |
3a00c802 PA |
14521 | { |
14522 | struct remote_state *rs = get_remote_state (); | |
14523 | ||
14524 | return rs->last_resume_exec_dir; | |
14525 | } | |
14526 | ||
f6327dcb KB |
14527 | /* Return pointer to the thread_info struct which corresponds to |
14528 | THREAD_HANDLE (having length HANDLE_LEN). */ | |
14529 | ||
f6ac5f3d PA |
14530 | thread_info * |
14531 | remote_target::thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
14532 | int handle_len, | |
14533 | inferior *inf) | |
f6327dcb | 14534 | { |
5b6d1e4f | 14535 | for (thread_info *tp : all_non_exited_threads (this)) |
f6327dcb | 14536 | { |
7aabaf9d | 14537 | remote_thread_info *priv = get_remote_thread_info (tp); |
f6327dcb KB |
14538 | |
14539 | if (tp->inf == inf && priv != NULL) | |
dda83cd7 | 14540 | { |
7aabaf9d | 14541 | if (handle_len != priv->thread_handle.size ()) |
f6327dcb | 14542 | error (_("Thread handle size mismatch: %d vs %zu (from remote)"), |
dda83cd7 | 14543 | handle_len, priv->thread_handle.size ()); |
7aabaf9d | 14544 | if (memcmp (thread_handle, priv->thread_handle.data (), |
dda83cd7 | 14545 | handle_len) == 0) |
f6327dcb KB |
14546 | return tp; |
14547 | } | |
14548 | } | |
14549 | ||
14550 | return NULL; | |
14551 | } | |
14552 | ||
3d6c6204 KB |
14553 | gdb::byte_vector |
14554 | remote_target::thread_info_to_thread_handle (struct thread_info *tp) | |
14555 | { | |
14556 | remote_thread_info *priv = get_remote_thread_info (tp); | |
14557 | return priv->thread_handle; | |
14558 | } | |
14559 | ||
57810aa7 | 14560 | bool |
f6ac5f3d | 14561 | remote_target::can_async_p () |
6426a772 | 14562 | { |
fce6cd34 AB |
14563 | /* This flag should be checked in the common target.c code. */ |
14564 | gdb_assert (target_async_permitted); | |
75c99385 | 14565 | |
fce6cd34 AB |
14566 | /* We're async whenever the serial device can. */ |
14567 | struct remote_state *rs = get_remote_state (); | |
5d93a237 | 14568 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
14569 | } |
14570 | ||
57810aa7 | 14571 | bool |
f6ac5f3d | 14572 | remote_target::is_async_p () |
6426a772 | 14573 | { |
23860348 | 14574 | /* We're async whenever the serial device is. */ |
7054fa5b | 14575 | struct remote_state *rs = get_remote_state (); |
5d93a237 | 14576 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
14577 | } |
14578 | ||
2acceee2 JM |
14579 | /* Pass the SERIAL event on and up to the client. One day this code |
14580 | will be able to delay notifying the client of an event until the | |
23860348 | 14581 | point where an entire packet has been received. */ |
2acceee2 | 14582 | |
2acceee2 JM |
14583 | static serial_event_ftype remote_async_serial_handler; |
14584 | ||
6426a772 | 14585 | static void |
819cc324 | 14586 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 14587 | { |
2acceee2 JM |
14588 | /* Don't propogate error information up to the client. Instead let |
14589 | the client find out about the error by querying the target. */ | |
b1a35af2 | 14590 | inferior_event_handler (INF_REG_EVENT); |
2acceee2 JM |
14591 | } |
14592 | ||
74531fed PA |
14593 | static void |
14594 | remote_async_inferior_event_handler (gdb_client_data data) | |
14595 | { | |
6b36ddeb | 14596 | inferior_event_handler (INF_REG_EVENT); |
74531fed PA |
14597 | } |
14598 | ||
5b6d1e4f PA |
14599 | int |
14600 | remote_target::async_wait_fd () | |
14601 | { | |
14602 | struct remote_state *rs = get_remote_state (); | |
14603 | return rs->remote_desc->fd; | |
14604 | } | |
14605 | ||
f6ac5f3d | 14606 | void |
4a570176 | 14607 | remote_target::async (bool enable) |
2acceee2 | 14608 | { |
5d93a237 TT |
14609 | struct remote_state *rs = get_remote_state (); |
14610 | ||
6a3753b3 | 14611 | if (enable) |
2acceee2 | 14612 | { |
88b496c3 | 14613 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
14614 | |
14615 | /* If there are pending events in the stop reply queue tell the | |
14616 | event loop to process them. */ | |
953edf2b | 14617 | if (!rs->stop_reply_queue.empty ()) |
6b8edb51 | 14618 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
6efcd9a8 PA |
14619 | /* For simplicity, below we clear the pending events token |
14620 | without remembering whether it is marked, so here we always | |
14621 | mark it. If there's actually no pending notification to | |
14622 | process, this ends up being a no-op (other than a spurious | |
14623 | event-loop wakeup). */ | |
14624 | if (target_is_non_stop_p ()) | |
14625 | mark_async_event_handler (rs->notif_state->get_pending_events_token); | |
2acceee2 JM |
14626 | } |
14627 | else | |
b7d2e916 PA |
14628 | { |
14629 | serial_async (rs->remote_desc, NULL, NULL); | |
6efcd9a8 PA |
14630 | /* If the core is disabling async, it doesn't want to be |
14631 | disturbed with target events. Clear all async event sources | |
14632 | too. */ | |
6b8edb51 | 14633 | clear_async_event_handler (rs->remote_async_inferior_event_token); |
6efcd9a8 PA |
14634 | if (target_is_non_stop_p ()) |
14635 | clear_async_event_handler (rs->notif_state->get_pending_events_token); | |
b7d2e916 | 14636 | } |
6426a772 JM |
14637 | } |
14638 | ||
65706a29 PA |
14639 | /* Implementation of the to_thread_events method. */ |
14640 | ||
f6ac5f3d PA |
14641 | void |
14642 | remote_target::thread_events (int enable) | |
65706a29 PA |
14643 | { |
14644 | struct remote_state *rs = get_remote_state (); | |
14645 | size_t size = get_remote_packet_size (); | |
65706a29 | 14646 | |
ff52c073 | 14647 | if (m_features.packet_support (PACKET_QThreadEvents) == PACKET_DISABLE) |
65706a29 PA |
14648 | return; |
14649 | ||
8d64371b | 14650 | xsnprintf (rs->buf.data (), size, "QThreadEvents:%x", enable ? 1 : 0); |
65706a29 | 14651 | putpkt (rs->buf); |
8d64371b | 14652 | getpkt (&rs->buf, 0); |
65706a29 | 14653 | |
ff52c073 | 14654 | switch (m_features.packet_ok (rs->buf, PACKET_QThreadEvents)) |
65706a29 PA |
14655 | { |
14656 | case PACKET_OK: | |
8d64371b TT |
14657 | if (strcmp (rs->buf.data (), "OK") != 0) |
14658 | error (_("Remote refused setting thread events: %s"), rs->buf.data ()); | |
65706a29 PA |
14659 | break; |
14660 | case PACKET_ERROR: | |
8d64371b | 14661 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
65706a29 PA |
14662 | break; |
14663 | case PACKET_UNKNOWN: | |
14664 | break; | |
14665 | } | |
14666 | } | |
14667 | ||
d471ea57 | 14668 | static void |
981a3fb3 | 14669 | show_remote_cmd (const char *args, int from_tty) |
d471ea57 | 14670 | { |
37a105a1 | 14671 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 14672 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 | 14673 | struct cmd_list_element *list = remote_show_cmdlist; |
79a45e25 | 14674 | struct ui_out *uiout = current_uiout; |
37a105a1 | 14675 | |
2e783024 | 14676 | ui_out_emit_tuple tuple_emitter (uiout, "showlist"); |
37a105a1 DJ |
14677 | for (; list != NULL; list = list->next) |
14678 | if (strcmp (list->name, "Z-packet") == 0) | |
14679 | continue; | |
427c3a89 DJ |
14680 | else if (list->type == not_set_cmd) |
14681 | /* Alias commands are exactly like the original, except they | |
14682 | don't have the normal type. */ | |
14683 | continue; | |
14684 | else | |
37a105a1 | 14685 | { |
2e783024 | 14686 | ui_out_emit_tuple option_emitter (uiout, "option"); |
a744cf53 | 14687 | |
112e8700 SM |
14688 | uiout->field_string ("name", list->name); |
14689 | uiout->text (": "); | |
427c3a89 | 14690 | if (list->type == show_cmd) |
f5c4fcd9 | 14691 | do_show_command (NULL, from_tty, list); |
427c3a89 DJ |
14692 | else |
14693 | cmd_func (list, NULL, from_tty); | |
37a105a1 | 14694 | } |
d471ea57 | 14695 | } |
5a2468f5 | 14696 | |
0f71a2f6 | 14697 | |
23860348 | 14698 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
14699 | static void |
14700 | remote_new_objfile (struct objfile *objfile) | |
14701 | { | |
06c7226e SM |
14702 | /* The objfile change happened in that program space. */ |
14703 | program_space *pspace = current_program_space; | |
5d93a237 | 14704 | |
06c7226e SM |
14705 | /* The affected program space is possibly shared by multiple inferiors. |
14706 | Consider sending a qSymbol packet for each of the inferiors using that | |
14707 | program space. */ | |
14708 | for (inferior *inf : all_inferiors ()) | |
14709 | { | |
14710 | if (inf->pspace != pspace) | |
14711 | continue; | |
122373f7 | 14712 | |
06c7226e SM |
14713 | /* Check whether the inferior's process target is a remote target. */ |
14714 | remote_target *remote = as_remote_target (inf->process_target ()); | |
14715 | if (remote == nullptr) | |
14716 | continue; | |
14717 | ||
14718 | /* When we are attaching or handling a fork child and the shared library | |
14719 | subsystem reads the list of loaded libraries, we receive new objfile | |
14720 | events in between each found library. The libraries are read in an | |
14721 | undefined order, so if we gave the remote side a chance to look up | |
14722 | symbols between each objfile, we might give it an inconsistent picture | |
14723 | of the inferior. It could appear that a library A appears loaded but | |
14724 | a library B does not, even though library A requires library B. That | |
14725 | would present a state that couldn't normally exist in the inferior. | |
14726 | ||
14727 | So, skip these events, we'll give the remote a chance to look up | |
14728 | symbols once all the loaded libraries and their symbols are known to | |
14729 | GDB. */ | |
14730 | if (inf->in_initial_library_scan) | |
14731 | continue; | |
14732 | ||
14733 | if (!remote->has_execution (inf)) | |
14734 | continue; | |
14735 | ||
14736 | /* Need to switch to a specific thread, because remote_check_symbols will | |
287de656 | 14737 | set the general thread using INFERIOR_PTID. |
122373f7 | 14738 | |
06c7226e SM |
14739 | It's possible to have inferiors with no thread here, because we are |
14740 | called very early in the connection process, while the inferior is | |
14741 | being set up, before threads are added. Just skip it, start_remote_1 | |
14742 | also calls remote_check_symbols when it's done setting things up. */ | |
14743 | thread_info *thread = any_thread_of_inferior (inf); | |
14744 | if (thread != nullptr) | |
14745 | { | |
14746 | scoped_restore_current_thread restore_thread; | |
14747 | switch_to_thread (thread); | |
14748 | remote->remote_check_symbols (); | |
14749 | } | |
14750 | } | |
dc8acb97 MS |
14751 | } |
14752 | ||
00bf0b85 SS |
14753 | /* Pull all the tracepoints defined on the target and create local |
14754 | data structures representing them. We don't want to create real | |
14755 | tracepoints yet, we don't want to mess up the user's existing | |
14756 | collection. */ | |
14757 | ||
f6ac5f3d PA |
14758 | int |
14759 | remote_target::upload_tracepoints (struct uploaded_tp **utpp) | |
d5551862 | 14760 | { |
00bf0b85 SS |
14761 | struct remote_state *rs = get_remote_state (); |
14762 | char *p; | |
d5551862 | 14763 | |
00bf0b85 SS |
14764 | /* Ask for a first packet of tracepoint definition. */ |
14765 | putpkt ("qTfP"); | |
8d64371b TT |
14766 | getpkt (&rs->buf, 0); |
14767 | p = rs->buf.data (); | |
00bf0b85 | 14768 | while (*p && *p != 'l') |
d5551862 | 14769 | { |
00bf0b85 SS |
14770 | parse_tracepoint_definition (p, utpp); |
14771 | /* Ask for another packet of tracepoint definition. */ | |
14772 | putpkt ("qTsP"); | |
8d64371b TT |
14773 | getpkt (&rs->buf, 0); |
14774 | p = rs->buf.data (); | |
d5551862 | 14775 | } |
00bf0b85 | 14776 | return 0; |
d5551862 SS |
14777 | } |
14778 | ||
f6ac5f3d PA |
14779 | int |
14780 | remote_target::upload_trace_state_variables (struct uploaded_tsv **utsvp) | |
d5551862 | 14781 | { |
00bf0b85 | 14782 | struct remote_state *rs = get_remote_state (); |
d5551862 | 14783 | char *p; |
d5551862 | 14784 | |
00bf0b85 SS |
14785 | /* Ask for a first packet of variable definition. */ |
14786 | putpkt ("qTfV"); | |
8d64371b TT |
14787 | getpkt (&rs->buf, 0); |
14788 | p = rs->buf.data (); | |
00bf0b85 | 14789 | while (*p && *p != 'l') |
d5551862 | 14790 | { |
00bf0b85 SS |
14791 | parse_tsv_definition (p, utsvp); |
14792 | /* Ask for another packet of variable definition. */ | |
14793 | putpkt ("qTsV"); | |
8d64371b TT |
14794 | getpkt (&rs->buf, 0); |
14795 | p = rs->buf.data (); | |
d5551862 | 14796 | } |
00bf0b85 | 14797 | return 0; |
d5551862 SS |
14798 | } |
14799 | ||
c1e36e3e PA |
14800 | /* The "set/show range-stepping" show hook. */ |
14801 | ||
14802 | static void | |
14803 | show_range_stepping (struct ui_file *file, int from_tty, | |
14804 | struct cmd_list_element *c, | |
14805 | const char *value) | |
14806 | { | |
6cb06a8c TT |
14807 | gdb_printf (file, |
14808 | _("Debugger's willingness to use range stepping " | |
14809 | "is %s.\n"), value); | |
c1e36e3e PA |
14810 | } |
14811 | ||
6b8edb51 PA |
14812 | /* Return true if the vCont;r action is supported by the remote |
14813 | stub. */ | |
14814 | ||
14815 | bool | |
14816 | remote_target::vcont_r_supported () | |
14817 | { | |
ff52c073 | 14818 | return (m_features.packet_support (PACKET_vCont) == PACKET_ENABLE |
6b8edb51 PA |
14819 | && get_remote_state ()->supports_vCont.r); |
14820 | } | |
14821 | ||
c1e36e3e PA |
14822 | /* The "set/show range-stepping" set hook. */ |
14823 | ||
14824 | static void | |
eb4c3f4a | 14825 | set_range_stepping (const char *ignore_args, int from_tty, |
c1e36e3e PA |
14826 | struct cmd_list_element *c) |
14827 | { | |
6b8edb51 PA |
14828 | /* When enabling, check whether range stepping is actually supported |
14829 | by the target, and warn if not. */ | |
c1e36e3e PA |
14830 | if (use_range_stepping) |
14831 | { | |
6b8edb51 PA |
14832 | remote_target *remote = get_current_remote_target (); |
14833 | if (remote == NULL | |
14834 | || !remote->vcont_r_supported ()) | |
14835 | warning (_("Range stepping is not supported by the current target")); | |
c1e36e3e PA |
14836 | } |
14837 | } | |
14838 | ||
baf2b57f SM |
14839 | static void |
14840 | show_remote_debug (struct ui_file *file, int from_tty, | |
14841 | struct cmd_list_element *c, const char *value) | |
14842 | { | |
6cb06a8c TT |
14843 | gdb_printf (file, _("Debugging of remote protocol is %s.\n"), |
14844 | value); | |
baf2b57f SM |
14845 | } |
14846 | ||
14847 | static void | |
14848 | show_remote_timeout (struct ui_file *file, int from_tty, | |
14849 | struct cmd_list_element *c, const char *value) | |
14850 | { | |
6cb06a8c TT |
14851 | gdb_printf (file, |
14852 | _("Timeout limit to wait for target to respond is %s.\n"), | |
14853 | value); | |
baf2b57f SM |
14854 | } |
14855 | ||
dbe692af LM |
14856 | /* Implement the "supports_memory_tagging" target_ops method. */ |
14857 | ||
14858 | bool | |
14859 | remote_target::supports_memory_tagging () | |
14860 | { | |
ff52c073 | 14861 | return m_features.remote_memory_tagging_p (); |
2c2e7f87 LM |
14862 | } |
14863 | ||
14864 | /* Create the qMemTags packet given ADDRESS, LEN and TYPE. */ | |
14865 | ||
14866 | static void | |
14867 | create_fetch_memtags_request (gdb::char_vector &packet, CORE_ADDR address, | |
14868 | size_t len, int type) | |
14869 | { | |
14870 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
14871 | ||
14872 | std::string request = string_printf ("qMemTags:%s,%s:%s", | |
14873 | phex_nz (address, addr_size), | |
14874 | phex_nz (len, sizeof (len)), | |
14875 | phex_nz (type, sizeof (type))); | |
14876 | ||
14877 | strcpy (packet.data (), request.c_str ()); | |
14878 | } | |
14879 | ||
14880 | /* Parse the qMemTags packet reply into TAGS. | |
14881 | ||
14882 | Return true if successful, false otherwise. */ | |
14883 | ||
14884 | static bool | |
14885 | parse_fetch_memtags_reply (const gdb::char_vector &reply, | |
14886 | gdb::byte_vector &tags) | |
14887 | { | |
14888 | if (reply.empty () || reply[0] == 'E' || reply[0] != 'm') | |
14889 | return false; | |
14890 | ||
14891 | /* Copy the tag data. */ | |
14892 | tags = hex2bin (reply.data () + 1); | |
14893 | ||
14894 | return true; | |
14895 | } | |
14896 | ||
14897 | /* Create the QMemTags packet given ADDRESS, LEN, TYPE and TAGS. */ | |
14898 | ||
14899 | static void | |
14900 | create_store_memtags_request (gdb::char_vector &packet, CORE_ADDR address, | |
14901 | size_t len, int type, | |
14902 | const gdb::byte_vector &tags) | |
14903 | { | |
14904 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
14905 | ||
14906 | /* Put together the main packet, address and length. */ | |
14907 | std::string request = string_printf ("QMemTags:%s,%s:%s:", | |
14908 | phex_nz (address, addr_size), | |
14909 | phex_nz (len, sizeof (len)), | |
14910 | phex_nz (type, sizeof (type))); | |
14911 | request += bin2hex (tags.data (), tags.size ()); | |
14912 | ||
14913 | /* Check if we have exceeded the maximum packet size. */ | |
14914 | if (packet.size () < request.length ()) | |
14915 | error (_("Contents too big for packet QMemTags.")); | |
14916 | ||
14917 | strcpy (packet.data (), request.c_str ()); | |
dbe692af LM |
14918 | } |
14919 | ||
14920 | /* Implement the "fetch_memtags" target_ops method. */ | |
14921 | ||
14922 | bool | |
14923 | remote_target::fetch_memtags (CORE_ADDR address, size_t len, | |
14924 | gdb::byte_vector &tags, int type) | |
14925 | { | |
2c2e7f87 | 14926 | /* Make sure the qMemTags packet is supported. */ |
ff52c073 | 14927 | if (!m_features.remote_memory_tagging_p ()) |
2c2e7f87 LM |
14928 | gdb_assert_not_reached ("remote fetch_memtags called with packet disabled"); |
14929 | ||
14930 | struct remote_state *rs = get_remote_state (); | |
14931 | ||
14932 | create_fetch_memtags_request (rs->buf, address, len, type); | |
14933 | ||
14934 | putpkt (rs->buf); | |
14935 | getpkt (&rs->buf, 0); | |
14936 | ||
14937 | return parse_fetch_memtags_reply (rs->buf, tags); | |
dbe692af LM |
14938 | } |
14939 | ||
14940 | /* Implement the "store_memtags" target_ops method. */ | |
14941 | ||
14942 | bool | |
14943 | remote_target::store_memtags (CORE_ADDR address, size_t len, | |
14944 | const gdb::byte_vector &tags, int type) | |
14945 | { | |
2c2e7f87 | 14946 | /* Make sure the QMemTags packet is supported. */ |
ff52c073 | 14947 | if (!m_features.remote_memory_tagging_p ()) |
2c2e7f87 LM |
14948 | gdb_assert_not_reached ("remote store_memtags called with packet disabled"); |
14949 | ||
14950 | struct remote_state *rs = get_remote_state (); | |
14951 | ||
14952 | create_store_memtags_request (rs->buf, address, len, type, tags); | |
14953 | ||
14954 | putpkt (rs->buf); | |
14955 | getpkt (&rs->buf, 0); | |
14956 | ||
14957 | /* Verify if the request was successful. */ | |
14958 | return packet_check_result (rs->buf.data ()) == PACKET_OK; | |
dbe692af LM |
14959 | } |
14960 | ||
c39ebbf4 TV |
14961 | /* Return true if remote target T is non-stop. */ |
14962 | ||
14963 | bool | |
14964 | remote_target_is_non_stop_p (remote_target *t) | |
14965 | { | |
14966 | scoped_restore_current_thread restore_thread; | |
14967 | switch_to_target_no_thread (t); | |
14968 | ||
14969 | return target_is_non_stop_p (); | |
14970 | } | |
14971 | ||
754487e2 LM |
14972 | #if GDB_SELF_TEST |
14973 | ||
14974 | namespace selftests { | |
14975 | ||
14976 | static void | |
14977 | test_memory_tagging_functions () | |
14978 | { | |
14979 | remote_target remote; | |
14980 | ||
14981 | struct packet_config *config | |
ff52c073 | 14982 | = &remote.m_features.m_protocol_packets[PACKET_memory_tagging_feature]; |
754487e2 LM |
14983 | |
14984 | scoped_restore restore_memtag_support_ | |
14985 | = make_scoped_restore (&config->support); | |
14986 | ||
14987 | /* Test memory tagging packet support. */ | |
14988 | config->support = PACKET_SUPPORT_UNKNOWN; | |
14989 | SELF_CHECK (remote.supports_memory_tagging () == false); | |
14990 | config->support = PACKET_DISABLE; | |
14991 | SELF_CHECK (remote.supports_memory_tagging () == false); | |
14992 | config->support = PACKET_ENABLE; | |
14993 | SELF_CHECK (remote.supports_memory_tagging () == true); | |
14994 | ||
14995 | /* Setup testing. */ | |
14996 | gdb::char_vector packet; | |
14997 | gdb::byte_vector tags, bv; | |
14998 | std::string expected, reply; | |
14999 | packet.resize (32000); | |
15000 | ||
15001 | /* Test creating a qMemTags request. */ | |
15002 | ||
15003 | expected = "qMemTags:0,0:0"; | |
15004 | create_fetch_memtags_request (packet, 0x0, 0x0, 0); | |
15005 | SELF_CHECK (strcmp (packet.data (), expected.c_str ()) == 0); | |
15006 | ||
15007 | expected = "qMemTags:deadbeef,10:1"; | |
15008 | create_fetch_memtags_request (packet, 0xdeadbeef, 16, 1); | |
15009 | SELF_CHECK (strcmp (packet.data (), expected.c_str ()) == 0); | |
15010 | ||
15011 | /* Test parsing a qMemTags reply. */ | |
15012 | ||
15013 | /* Error reply, tags vector unmodified. */ | |
15014 | reply = "E00"; | |
15015 | strcpy (packet.data (), reply.c_str ()); | |
15016 | tags.resize (0); | |
15017 | SELF_CHECK (parse_fetch_memtags_reply (packet, tags) == false); | |
15018 | SELF_CHECK (tags.size () == 0); | |
15019 | ||
15020 | /* Valid reply, tags vector updated. */ | |
15021 | tags.resize (0); | |
15022 | bv.resize (0); | |
15023 | ||
15024 | for (int i = 0; i < 5; i++) | |
15025 | bv.push_back (i); | |
15026 | ||
15027 | reply = "m" + bin2hex (bv.data (), bv.size ()); | |
15028 | strcpy (packet.data (), reply.c_str ()); | |
15029 | ||
15030 | SELF_CHECK (parse_fetch_memtags_reply (packet, tags) == true); | |
15031 | SELF_CHECK (tags.size () == 5); | |
15032 | ||
15033 | for (int i = 0; i < 5; i++) | |
15034 | SELF_CHECK (tags[i] == i); | |
15035 | ||
15036 | /* Test creating a QMemTags request. */ | |
15037 | ||
15038 | /* Empty tag data. */ | |
15039 | tags.resize (0); | |
15040 | expected = "QMemTags:0,0:0:"; | |
15041 | create_store_memtags_request (packet, 0x0, 0x0, 0, tags); | |
15042 | SELF_CHECK (memcmp (packet.data (), expected.c_str (), | |
15043 | expected.length ()) == 0); | |
15044 | ||
15045 | /* Non-empty tag data. */ | |
15046 | tags.resize (0); | |
15047 | for (int i = 0; i < 5; i++) | |
15048 | tags.push_back (i); | |
15049 | expected = "QMemTags:deadbeef,ff:1:0001020304"; | |
15050 | create_store_memtags_request (packet, 0xdeadbeef, 255, 1, tags); | |
15051 | SELF_CHECK (memcmp (packet.data (), expected.c_str (), | |
15052 | expected.length ()) == 0); | |
15053 | } | |
15054 | ||
15055 | } // namespace selftests | |
15056 | #endif /* GDB_SELF_TEST */ | |
15057 | ||
6c265988 | 15058 | void _initialize_remote (); |
c906108c | 15059 | void |
6c265988 | 15060 | _initialize_remote () |
c906108c | 15061 | { |
d9f719f1 PA |
15062 | add_target (remote_target_info, remote_target::open); |
15063 | add_target (extended_remote_target_info, extended_remote_target::open); | |
cce74817 | 15064 | |
dc8acb97 | 15065 | /* Hook into new objfile notification. */ |
c90e7d63 | 15066 | gdb::observers::new_objfile.attach (remote_new_objfile, "remote"); |
dc8acb97 | 15067 | |
c906108c SS |
15068 | #if 0 |
15069 | init_remote_threadtests (); | |
15070 | #endif | |
15071 | ||
23860348 | 15072 | /* set/show remote ... */ |
d471ea57 | 15073 | |
0743fc83 | 15074 | add_basic_prefix_cmd ("remote", class_maintenance, _("\ |
590042fc | 15075 | Remote protocol specific variables.\n\ |
5a2468f5 | 15076 | Configure various remote-protocol specific variables such as\n\ |
590042fc | 15077 | the packets being used."), |
2f822da5 | 15078 | &remote_set_cmdlist, |
0743fc83 | 15079 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 15080 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
590042fc | 15081 | Remote protocol specific variables.\n\ |
5a2468f5 | 15082 | Configure various remote-protocol specific variables such as\n\ |
590042fc | 15083 | the packets being used."), |
2f822da5 | 15084 | &remote_show_cmdlist, |
23860348 | 15085 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 15086 | |
1a966eab AC |
15087 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
15088 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
15089 | Argument is a single section name (default: all loaded sections).\n\ |
15090 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
15091 | &cmdlist); |
15092 | ||
e5b176f2 | 15093 | add_cmd ("packet", class_maintenance, cli_packet_command, _("\ |
1a966eab | 15094 | Send an arbitrary packet to a remote target.\n\ |
c906108c SS |
15095 | maintenance packet TEXT\n\ |
15096 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
15097 | this command sends the string TEXT to the inferior, and displays the\n\ | |
15098 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 15099 | terminating `#' character and checksum."), |
c906108c SS |
15100 | &maintenancelist); |
15101 | ||
9f260536 SM |
15102 | set_show_commands remotebreak_cmds |
15103 | = add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ | |
7915a72c AC |
15104 | Set whether to send break if interrupted."), _("\ |
15105 | Show whether to send break if interrupted."), _("\ | |
15106 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9f260536 SM |
15107 | set_remotebreak, show_remotebreak, |
15108 | &setlist, &showlist); | |
15109 | deprecate_cmd (remotebreak_cmds.set, "set remote interrupt-sequence"); | |
15110 | deprecate_cmd (remotebreak_cmds.show, "show remote interrupt-sequence"); | |
9a7071a8 JB |
15111 | |
15112 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
15113 | interrupt_sequence_modes, &interrupt_sequence_mode, |
15114 | _("\ | |
9a7071a8 JB |
15115 | Set interrupt sequence to remote target."), _("\ |
15116 | Show interrupt sequence to remote target."), _("\ | |
15117 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
15118 | NULL, show_interrupt_sequence, | |
15119 | &remote_set_cmdlist, | |
15120 | &remote_show_cmdlist); | |
15121 | ||
15122 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
15123 | &interrupt_on_connect, _("\ | |
590042fc PW |
15124 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _("\ |
15125 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _("\ | |
9a7071a8 JB |
15126 | If set, interrupt sequence is sent to remote target."), |
15127 | NULL, NULL, | |
15128 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 15129 | |
23860348 | 15130 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 15131 | |
1a966eab AC |
15132 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
15133 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 15134 | &setlist); |
1a966eab AC |
15135 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
15136 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
15137 | &showlist); |
15138 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
15139 | set_memory_write_packet_size, _("\ |
15140 | Set the maximum number of bytes per memory-write packet.\n\ | |
15141 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
15142 | default packet size. The actual limit is further reduced\n\ | |
fe4c3ca0 CS |
15143 | dependent on the target. Specify \"fixed\" to disable the\n\ |
15144 | further restriction and \"limit\" to enable that restriction."), | |
11cf8741 JM |
15145 | &remote_set_cmdlist); |
15146 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
15147 | set_memory_read_packet_size, _("\ |
15148 | Set the maximum number of bytes per memory-read packet.\n\ | |
15149 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
15150 | default packet size. The actual limit is further reduced\n\ | |
fe4c3ca0 CS |
15151 | dependent on the target. Specify \"fixed\" to disable the\n\ |
15152 | further restriction and \"limit\" to enable that restriction."), | |
11cf8741 JM |
15153 | &remote_set_cmdlist); |
15154 | add_cmd ("memory-write-packet-size", no_class, | |
15155 | show_memory_write_packet_size, | |
1a966eab | 15156 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
15157 | &remote_show_cmdlist); |
15158 | add_cmd ("memory-read-packet-size", no_class, | |
15159 | show_memory_read_packet_size, | |
1a966eab | 15160 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 15161 | &remote_show_cmdlist); |
c906108c | 15162 | |
055303e2 | 15163 | add_setshow_zuinteger_unlimited_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
15164 | &remote_hw_watchpoint_limit, _("\ |
15165 | Set the maximum number of target hardware watchpoints."), _("\ | |
15166 | Show the maximum number of target hardware watchpoints."), _("\ | |
055303e2 AB |
15167 | Specify \"unlimited\" for unlimited hardware watchpoints."), |
15168 | NULL, show_hardware_watchpoint_limit, | |
15169 | &remote_set_cmdlist, | |
15170 | &remote_show_cmdlist); | |
15171 | add_setshow_zuinteger_unlimited_cmd ("hardware-watchpoint-length-limit", | |
15172 | no_class, | |
480a3f21 PW |
15173 | &remote_hw_watchpoint_length_limit, _("\ |
15174 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
15175 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
055303e2 AB |
15176 | Specify \"unlimited\" to allow watchpoints of unlimited size."), |
15177 | NULL, show_hardware_watchpoint_length_limit, | |
480a3f21 | 15178 | &remote_set_cmdlist, &remote_show_cmdlist); |
055303e2 | 15179 | add_setshow_zuinteger_unlimited_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
15180 | &remote_hw_breakpoint_limit, _("\ |
15181 | Set the maximum number of target hardware breakpoints."), _("\ | |
15182 | Show the maximum number of target hardware breakpoints."), _("\ | |
055303e2 AB |
15183 | Specify \"unlimited\" for unlimited hardware breakpoints."), |
15184 | NULL, show_hardware_breakpoint_limit, | |
b3f42336 | 15185 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 15186 | |
1b493192 PA |
15187 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
15188 | &remote_address_size, _("\ | |
4d28ad1e AC |
15189 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
15190 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
15191 | NULL, |
15192 | NULL, /* FIXME: i18n: */ | |
15193 | &setlist, &showlist); | |
c906108c | 15194 | |
ca4f7f8b PA |
15195 | init_all_packet_configs (); |
15196 | ||
ff52c073 | 15197 | add_packet_config_cmd (PACKET_X, "X", "binary-download", 1); |
0f71a2f6 | 15198 | |
ff52c073 | 15199 | add_packet_config_cmd (PACKET_vCont, "vCont", "verbose-resume", 0); |
506fb367 | 15200 | |
ff52c073 CS |
15201 | add_packet_config_cmd (PACKET_QPassSignals, "QPassSignals", "pass-signals", |
15202 | 0); | |
89be2091 | 15203 | |
ff52c073 CS |
15204 | add_packet_config_cmd (PACKET_QCatchSyscalls, "QCatchSyscalls", |
15205 | "catch-syscalls", 0); | |
82075af2 | 15206 | |
ff52c073 CS |
15207 | add_packet_config_cmd (PACKET_QProgramSignals, "QProgramSignals", |
15208 | "program-signals", 0); | |
9b224c5e | 15209 | |
ff52c073 CS |
15210 | add_packet_config_cmd (PACKET_QSetWorkingDir, "QSetWorkingDir", |
15211 | "set-working-dir", 0); | |
bc3b087d | 15212 | |
ff52c073 CS |
15213 | add_packet_config_cmd (PACKET_QStartupWithShell, "QStartupWithShell", |
15214 | "startup-with-shell", 0); | |
aefd8b33 | 15215 | |
ff52c073 CS |
15216 | add_packet_config_cmd (PACKET_QEnvironmentHexEncoded,"QEnvironmentHexEncoded", |
15217 | "environment-hex-encoded", 0); | |
0a2dde4a | 15218 | |
ff52c073 CS |
15219 | add_packet_config_cmd (PACKET_QEnvironmentReset, "QEnvironmentReset", |
15220 | "environment-reset", 0); | |
0a2dde4a | 15221 | |
ff52c073 CS |
15222 | add_packet_config_cmd (PACKET_QEnvironmentUnset, "QEnvironmentUnset", |
15223 | "environment-unset", 0); | |
0a2dde4a | 15224 | |
ff52c073 | 15225 | add_packet_config_cmd (PACKET_qSymbol, "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 15226 | |
ff52c073 | 15227 | add_packet_config_cmd (PACKET_P, "P", "set-register", 1); |
d471ea57 | 15228 | |
ff52c073 | 15229 | add_packet_config_cmd (PACKET_p, "p", "fetch-register", 1); |
b96ec7ac | 15230 | |
ff52c073 | 15231 | add_packet_config_cmd (PACKET_Z0, "Z0", "software-breakpoint", 0); |
d471ea57 | 15232 | |
ff52c073 | 15233 | add_packet_config_cmd (PACKET_Z1, "Z1", "hardware-breakpoint", 0); |
d471ea57 | 15234 | |
ff52c073 | 15235 | add_packet_config_cmd (PACKET_Z2, "Z2", "write-watchpoint", 0); |
d471ea57 | 15236 | |
ff52c073 | 15237 | add_packet_config_cmd (PACKET_Z3, "Z3", "read-watchpoint", 0); |
d471ea57 | 15238 | |
ff52c073 | 15239 | add_packet_config_cmd (PACKET_Z4, "Z4", "access-watchpoint", 0); |
d471ea57 | 15240 | |
ff52c073 CS |
15241 | add_packet_config_cmd (PACKET_qXfer_auxv, "qXfer:auxv:read", |
15242 | "read-aux-vector", 0); | |
802188a7 | 15243 | |
ff52c073 CS |
15244 | add_packet_config_cmd (PACKET_qXfer_exec_file, "qXfer:exec-file:read", |
15245 | "pid-to-exec-file", 0); | |
c78fa86a | 15246 | |
ff52c073 | 15247 | add_packet_config_cmd (PACKET_qXfer_features, |
23181151 DJ |
15248 | "qXfer:features:read", "target-features", 0); |
15249 | ||
ff52c073 CS |
15250 | add_packet_config_cmd (PACKET_qXfer_libraries, "qXfer:libraries:read", |
15251 | "library-info", 0); | |
cfa9d6d9 | 15252 | |
ff52c073 | 15253 | add_packet_config_cmd (PACKET_qXfer_libraries_svr4, |
2268b414 JK |
15254 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); |
15255 | ||
ff52c073 CS |
15256 | add_packet_config_cmd (PACKET_qXfer_memory_map, "qXfer:memory-map:read", |
15257 | "memory-map", 0); | |
fd79ecee | 15258 | |
ff52c073 | 15259 | add_packet_config_cmd (PACKET_qXfer_osdata, "qXfer:osdata:read", "osdata", 0); |
07e059b5 | 15260 | |
ff52c073 CS |
15261 | add_packet_config_cmd (PACKET_qXfer_threads, "qXfer:threads:read", "threads", |
15262 | 0); | |
dc146f7c | 15263 | |
ff52c073 CS |
15264 | add_packet_config_cmd (PACKET_qXfer_siginfo_read, "qXfer:siginfo:read", |
15265 | "read-siginfo-object", 0); | |
4aa995e1 | 15266 | |
ff52c073 CS |
15267 | add_packet_config_cmd (PACKET_qXfer_siginfo_write, "qXfer:siginfo:write", |
15268 | "write-siginfo-object", 0); | |
4aa995e1 | 15269 | |
ff52c073 CS |
15270 | add_packet_config_cmd (PACKET_qXfer_traceframe_info, |
15271 | "qXfer:traceframe-info:read", "traceframe-info", 0); | |
b3b9301e | 15272 | |
ff52c073 CS |
15273 | add_packet_config_cmd (PACKET_qXfer_uib, "qXfer:uib:read", |
15274 | "unwind-info-block", 0); | |
169081d0 | 15275 | |
ff52c073 CS |
15276 | add_packet_config_cmd (PACKET_qGetTLSAddr, "qGetTLSAddr", |
15277 | "get-thread-local-storage-address", 0); | |
38691318 | 15278 | |
ff52c073 CS |
15279 | add_packet_config_cmd (PACKET_qGetTIBAddr, "qGetTIBAddr", |
15280 | "get-thread-information-block-address", 0); | |
711e434b | 15281 | |
ff52c073 | 15282 | add_packet_config_cmd (PACKET_bc, "bc", "reverse-continue", 0); |
40ab02ce | 15283 | |
ff52c073 | 15284 | add_packet_config_cmd (PACKET_bs, "bs", "reverse-step", 0); |
40ab02ce | 15285 | |
ff52c073 CS |
15286 | add_packet_config_cmd (PACKET_qSupported, "qSupported", "supported-packets", |
15287 | 0); | |
be2a5f71 | 15288 | |
ff52c073 CS |
15289 | add_packet_config_cmd (PACKET_qSearch_memory, "qSearch:memory", |
15290 | "search-memory", 0); | |
08388c79 | 15291 | |
ff52c073 | 15292 | add_packet_config_cmd (PACKET_qTStatus, "qTStatus", "trace-status", 0); |
bd3eecc3 | 15293 | |
ff52c073 | 15294 | add_packet_config_cmd (PACKET_vFile_setfs, "vFile:setfs", "hostio-setfs", 0); |
15a201c8 | 15295 | |
ff52c073 | 15296 | add_packet_config_cmd (PACKET_vFile_open, "vFile:open", "hostio-open", 0); |
a6b151f1 | 15297 | |
ff52c073 | 15298 | add_packet_config_cmd (PACKET_vFile_pread, "vFile:pread", "hostio-pread", 0); |
a6b151f1 | 15299 | |
ff52c073 CS |
15300 | add_packet_config_cmd (PACKET_vFile_pwrite, "vFile:pwrite", "hostio-pwrite", |
15301 | 0); | |
a6b151f1 | 15302 | |
ff52c073 | 15303 | add_packet_config_cmd (PACKET_vFile_close, "vFile:close", "hostio-close", 0); |
a6b151f1 | 15304 | |
ff52c073 CS |
15305 | add_packet_config_cmd (PACKET_vFile_unlink, "vFile:unlink", "hostio-unlink", |
15306 | 0); | |
a6b151f1 | 15307 | |
ff52c073 CS |
15308 | add_packet_config_cmd (PACKET_vFile_readlink, "vFile:readlink", |
15309 | "hostio-readlink", 0); | |
b9e7b9c3 | 15310 | |
ff52c073 | 15311 | add_packet_config_cmd (PACKET_vFile_fstat, "vFile:fstat", "hostio-fstat", 0); |
0a93529c | 15312 | |
ff52c073 | 15313 | add_packet_config_cmd (PACKET_vAttach, "vAttach", "attach", 0); |
2d717e4f | 15314 | |
ff52c073 | 15315 | add_packet_config_cmd (PACKET_vRun, "vRun", "run", 0); |
2d717e4f | 15316 | |
ff52c073 | 15317 | add_packet_config_cmd (PACKET_QStartNoAckMode, "QStartNoAckMode", "noack", 0); |
a6f3e723 | 15318 | |
ff52c073 | 15319 | add_packet_config_cmd (PACKET_vKill, "vKill", "kill", 0); |
82f73884 | 15320 | |
ff52c073 | 15321 | add_packet_config_cmd (PACKET_qAttached, "qAttached", "query-attached", 0); |
0b16c5cf | 15322 | |
ff52c073 CS |
15323 | add_packet_config_cmd (PACKET_ConditionalTracepoints, |
15324 | "ConditionalTracepoints", "conditional-tracepoints", | |
15325 | 0); | |
3788aec7 | 15326 | |
ff52c073 CS |
15327 | add_packet_config_cmd (PACKET_ConditionalBreakpoints, |
15328 | "ConditionalBreakpoints", "conditional-breakpoints", | |
15329 | 0); | |
3788aec7 | 15330 | |
ff52c073 | 15331 | add_packet_config_cmd (PACKET_BreakpointCommands, "BreakpointCommands", |
d3ce09f5 SS |
15332 | "breakpoint-commands", 0); |
15333 | ||
ff52c073 CS |
15334 | add_packet_config_cmd (PACKET_FastTracepoints, "FastTracepoints", |
15335 | "fast-tracepoints", 0); | |
782b2b07 | 15336 | |
ff52c073 CS |
15337 | add_packet_config_cmd (PACKET_TracepointSource, "TracepointSource", |
15338 | "TracepointSource", 0); | |
409873ef | 15339 | |
ff52c073 | 15340 | add_packet_config_cmd (PACKET_QAllow, "QAllow", "allow", 0); |
d914c394 | 15341 | |
ff52c073 CS |
15342 | add_packet_config_cmd (PACKET_StaticTracepoints, "StaticTracepoints", |
15343 | "static-tracepoints", 0); | |
0fb4aa4b | 15344 | |
ff52c073 CS |
15345 | add_packet_config_cmd (PACKET_InstallInTrace, "InstallInTrace", |
15346 | "install-in-trace", 0); | |
1e4d1764 | 15347 | |
ff52c073 | 15348 | add_packet_config_cmd (PACKET_qXfer_statictrace_read, |
dda83cd7 | 15349 | "qXfer:statictrace:read", "read-sdata-object", 0); |
0fb4aa4b | 15350 | |
ff52c073 CS |
15351 | add_packet_config_cmd (PACKET_qXfer_fdpic, "qXfer:fdpic:read", |
15352 | "read-fdpic-loadmap", 0); | |
78d85199 | 15353 | |
ff52c073 CS |
15354 | add_packet_config_cmd (PACKET_QDisableRandomization, "QDisableRandomization", |
15355 | "disable-randomization", 0); | |
03583c20 | 15356 | |
ff52c073 | 15357 | add_packet_config_cmd (PACKET_QAgent, "QAgent", "agent", 0); |
d1feda86 | 15358 | |
ff52c073 CS |
15359 | add_packet_config_cmd (PACKET_QTBuffer_size, "QTBuffer:size", |
15360 | "trace-buffer-size", 0); | |
f6f899bf | 15361 | |
ff52c073 CS |
15362 | add_packet_config_cmd (PACKET_Qbtrace_off, "Qbtrace:off", "disable-btrace", |
15363 | 0); | |
9accd112 | 15364 | |
ff52c073 CS |
15365 | add_packet_config_cmd (PACKET_Qbtrace_bts, "Qbtrace:bts", "enable-btrace-bts", |
15366 | 0); | |
b20a6524 | 15367 | |
ff52c073 CS |
15368 | add_packet_config_cmd (PACKET_Qbtrace_pt, "Qbtrace:pt", "enable-btrace-pt", |
15369 | 0); | |
9accd112 | 15370 | |
ff52c073 | 15371 | add_packet_config_cmd (PACKET_qXfer_btrace, "qXfer:btrace", "read-btrace", 0); |
9accd112 | 15372 | |
ff52c073 CS |
15373 | add_packet_config_cmd (PACKET_qXfer_btrace_conf, "qXfer:btrace-conf", |
15374 | "read-btrace-conf", 0); | |
f4abbc16 | 15375 | |
ff52c073 CS |
15376 | add_packet_config_cmd (PACKET_Qbtrace_conf_bts_size, "Qbtrace-conf:bts:size", |
15377 | "btrace-conf-bts-size", 0); | |
d33501a5 | 15378 | |
ff52c073 CS |
15379 | add_packet_config_cmd (PACKET_multiprocess_feature, "multiprocess-feature", |
15380 | "multiprocess-feature", 0); | |
73b8c1fd | 15381 | |
ff52c073 CS |
15382 | add_packet_config_cmd (PACKET_swbreak_feature, "swbreak-feature", |
15383 | "swbreak-feature", 0); | |
f7e6eed5 | 15384 | |
ff52c073 CS |
15385 | add_packet_config_cmd (PACKET_hwbreak_feature, "hwbreak-feature", |
15386 | "hwbreak-feature", 0); | |
f7e6eed5 | 15387 | |
ff52c073 CS |
15388 | add_packet_config_cmd (PACKET_fork_event_feature, "fork-event-feature", |
15389 | "fork-event-feature", 0); | |
89245bc0 | 15390 | |
ff52c073 CS |
15391 | add_packet_config_cmd (PACKET_vfork_event_feature, "vfork-event-feature", |
15392 | "vfork-event-feature", 0); | |
89245bc0 | 15393 | |
ff52c073 CS |
15394 | add_packet_config_cmd (PACKET_Qbtrace_conf_pt_size, "Qbtrace-conf:pt:size", |
15395 | "btrace-conf-pt-size", 0); | |
b20a6524 | 15396 | |
ff52c073 CS |
15397 | add_packet_config_cmd (PACKET_vContSupported, "vContSupported", |
15398 | "verbose-resume-supported", 0); | |
750ce8d1 | 15399 | |
ff52c073 CS |
15400 | add_packet_config_cmd (PACKET_exec_event_feature, "exec-event-feature", |
15401 | "exec-event-feature", 0); | |
94585166 | 15402 | |
ff52c073 | 15403 | add_packet_config_cmd (PACKET_vCtrlC, "vCtrlC", "ctrl-c", 0); |
de979965 | 15404 | |
ff52c073 CS |
15405 | add_packet_config_cmd (PACKET_QThreadEvents, "QThreadEvents", "thread-events", |
15406 | 0); | |
65706a29 | 15407 | |
ff52c073 CS |
15408 | add_packet_config_cmd (PACKET_no_resumed, "N stop reply", |
15409 | "no-resumed-stop-reply", 0); | |
f2faf941 | 15410 | |
ff52c073 | 15411 | add_packet_config_cmd (PACKET_memory_tagging_feature, |
2c2e7f87 LM |
15412 | "memory-tagging-feature", "memory-tagging-feature", 0); |
15413 | ||
0b736949 DB |
15414 | /* Assert that we've registered "set remote foo-packet" commands |
15415 | for all packet configs. */ | |
ca4f7f8b PA |
15416 | { |
15417 | int i; | |
15418 | ||
15419 | for (i = 0; i < PACKET_MAX; i++) | |
15420 | { | |
15421 | /* Ideally all configs would have a command associated. Some | |
15422 | still don't though. */ | |
15423 | int excepted; | |
15424 | ||
15425 | switch (i) | |
15426 | { | |
15427 | case PACKET_QNonStop: | |
ca4f7f8b PA |
15428 | case PACKET_EnableDisableTracepoints_feature: |
15429 | case PACKET_tracenz_feature: | |
15430 | case PACKET_DisconnectedTracing_feature: | |
15431 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
15432 | case PACKET_qCRC: |
15433 | /* Additions to this list need to be well justified: | |
15434 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
15435 | excepted = 1; |
15436 | break; | |
15437 | default: | |
15438 | excepted = 0; | |
15439 | break; | |
15440 | } | |
15441 | ||
15442 | /* This catches both forgetting to add a config command, and | |
15443 | forgetting to remove a packet from the exception list. */ | |
ff52c073 | 15444 | gdb_assert (excepted == (packets_descriptions[i].name == NULL)); |
ca4f7f8b PA |
15445 | } |
15446 | } | |
15447 | ||
37a105a1 DJ |
15448 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
15449 | Z sub-packet has its own set and show commands, but users may | |
15450 | have sets to this variable in their .gdbinit files (or in their | |
15451 | documentation). */ | |
e9e68a56 | 15452 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c | 15453 | &remote_Z_packet_detect, _("\ |
590042fc PW |
15454 | Set use of remote protocol `Z' packets."), _("\ |
15455 | Show use of remote protocol `Z' packets."), _("\ | |
3b64bf98 | 15456 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 15457 | packets."), |
e9e68a56 | 15458 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
15459 | show_remote_protocol_Z_packet_cmd, |
15460 | /* FIXME: i18n: Use of remote protocol | |
15461 | `Z' packets is %s. */ | |
e9e68a56 | 15462 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 15463 | |
0743fc83 | 15464 | add_basic_prefix_cmd ("remote", class_files, _("\ |
590042fc | 15465 | Manipulate files on the remote system.\n\ |
a6b151f1 | 15466 | Transfer files to and from the remote target system."), |
2f822da5 | 15467 | &remote_cmdlist, |
0743fc83 | 15468 | 0 /* allow-unknown */, &cmdlist); |
a6b151f1 DJ |
15469 | |
15470 | add_cmd ("put", class_files, remote_put_command, | |
15471 | _("Copy a local file to the remote system."), | |
15472 | &remote_cmdlist); | |
15473 | ||
15474 | add_cmd ("get", class_files, remote_get_command, | |
15475 | _("Copy a remote file to the local system."), | |
15476 | &remote_cmdlist); | |
15477 | ||
15478 | add_cmd ("delete", class_files, remote_delete_command, | |
15479 | _("Delete a remote file."), | |
15480 | &remote_cmdlist); | |
15481 | ||
2d717e4f | 15482 | add_setshow_string_noescape_cmd ("exec-file", class_files, |
94585166 | 15483 | &remote_exec_file_var, _("\ |
590042fc PW |
15484 | Set the remote pathname for \"run\"."), _("\ |
15485 | Show the remote pathname for \"run\"."), NULL, | |
94585166 DB |
15486 | set_remote_exec_file, |
15487 | show_remote_exec_file, | |
15488 | &remote_set_cmdlist, | |
15489 | &remote_show_cmdlist); | |
2d717e4f | 15490 | |
c1e36e3e PA |
15491 | add_setshow_boolean_cmd ("range-stepping", class_run, |
15492 | &use_range_stepping, _("\ | |
15493 | Enable or disable range stepping."), _("\ | |
15494 | Show whether target-assisted range stepping is enabled."), _("\ | |
15495 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
15496 | tells the target to step the corresponding range of addresses itself instead\n\ | |
15497 | of issuing multiple single-steps. This speeds up source level\n\ | |
15498 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
15499 | stepping is supported by the target. The default is on."), | |
15500 | set_range_stepping, | |
15501 | show_range_stepping, | |
15502 | &setlist, | |
15503 | &showlist); | |
15504 | ||
ed2b7c17 TT |
15505 | add_setshow_zinteger_cmd ("watchdog", class_maintenance, &watchdog, _("\ |
15506 | Set watchdog timer."), _("\ | |
15507 | Show watchdog timer."), _("\ | |
15508 | When non-zero, this timeout is used instead of waiting forever for a target\n\ | |
15509 | to finish a low-level step or continue operation. If the specified amount\n\ | |
15510 | of time passes without a response from the target, an error occurs."), | |
15511 | NULL, | |
15512 | show_watchdog, | |
15513 | &setlist, &showlist); | |
15514 | ||
6cc8564b LM |
15515 | add_setshow_zuinteger_unlimited_cmd ("remote-packet-max-chars", no_class, |
15516 | &remote_packet_max_chars, _("\ | |
15517 | Set the maximum number of characters to display for each remote packet."), _("\ | |
15518 | Show the maximum number of characters to display for each remote packet."), _("\ | |
15519 | Specify \"unlimited\" to display all the characters."), | |
15520 | NULL, show_remote_packet_max_chars, | |
15521 | &setdebuglist, &showdebuglist); | |
15522 | ||
02349803 SM |
15523 | add_setshow_boolean_cmd ("remote", no_class, &remote_debug, |
15524 | _("Set debugging of remote protocol."), | |
15525 | _("Show debugging of remote protocol."), | |
15526 | _("\ | |
baf2b57f SM |
15527 | When enabled, each packet sent or received with the remote target\n\ |
15528 | is displayed."), | |
02349803 SM |
15529 | NULL, |
15530 | show_remote_debug, | |
15531 | &setdebuglist, &showdebuglist); | |
baf2b57f SM |
15532 | |
15533 | add_setshow_zuinteger_unlimited_cmd ("remotetimeout", no_class, | |
15534 | &remote_timeout, _("\ | |
15535 | Set timeout limit to wait for target to respond."), _("\ | |
15536 | Show timeout limit to wait for target to respond."), _("\ | |
15537 | This value is used to set the time limit for gdb to wait for a response\n\ | |
15538 | from the target."), | |
15539 | NULL, | |
15540 | show_remote_timeout, | |
15541 | &setlist, &showlist); | |
15542 | ||
449092f6 | 15543 | /* Eventually initialize fileio. See fileio.c */ |
3f4d92eb | 15544 | initialize_remote_fileio (&remote_set_cmdlist, &remote_show_cmdlist); |
754487e2 LM |
15545 | |
15546 | #if GDB_SELF_TEST | |
15547 | selftests::register_test ("remote_memory_tagging", | |
15548 | selftests::test_memory_tagging_functions); | |
15549 | #endif | |
c906108c | 15550 | } |